954 lines
22 KiB
Plaintext
954 lines
22 KiB
Plaintext
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{{alias}}()
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A typed array constructor which returns a typed array representing an array
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of 32-bit unsigned integers in the platform byte order.
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Returns
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-------
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out: Uint32Array
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A typed array.
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Examples
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--------
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> var arr = new {{alias}}()
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<Uint32Array>
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{{alias}}( length )
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Returns a typed array having a specified length.
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Parameters
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----------
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length: integer
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Typed array length.
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Returns
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-------
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out: Uint32Array
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A typed array.
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Examples
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--------
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> var arr = new {{alias}}( 5 )
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<Uint32Array>[ 0, 0, 0, 0, 0 ]
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{{alias}}( typedarray )
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Creates a typed array from another typed array.
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Parameters
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----------
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typedarray: TypedArray
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Typed array from which to generate another typed array.
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Returns
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-------
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out: Uint32Array
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A typed array.
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Examples
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--------
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> var arr1 = new {{alias:@stdlib/array/int32}}( [ 5, 5, 5 ] );
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> var arr2 = new {{alias}}( arr1 )
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<Uint32Array>[ 5, 5, 5 ]
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{{alias}}( obj )
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Creates a typed array from an array-like object or iterable.
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Parameters
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----------
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obj: Object
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Array-like object or iterable from which to generate a typed array.
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Returns
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-------
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out: Uint32Array
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A typed array.
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Examples
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--------
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> var arr1 = [ 5.0, 5.0, 5.0 ];
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> var arr2 = new {{alias}}( arr1 )
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<Uint32Array>[ 5, 5, 5 ]
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{{alias}}( buffer[, byteOffset[, length]] )
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Returns a typed array view of an ArrayBuffer.
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Parameters
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----------
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buffer: ArrayBuffer
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Underlying ArrayBuffer.
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byteOffset: integer (optional)
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Integer byte offset specifying the location of the first typed array
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element. Default: 0.
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length: integer (optional)
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View length. If not provided, the view spans from the byteOffset to
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the end of the underlying ArrayBuffer.
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Returns
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-------
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out: Uint32Array
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A typed array.
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Examples
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--------
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> var buf = new {{alias:@stdlib/array/buffer}}( 16 );
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> var arr = new {{alias}}( buf, 0, 4 )
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<Uint32Array>[ 0, 0, 0, 0 ]
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{{alias}}.from( src[, map[, thisArg]] )
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Creates a new typed array from an array-like object or an iterable.
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A callback is provided the following arguments:
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- value: source value.
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- index: source index.
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Parameters
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----------
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src: ArrayLike|Iterable
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Source of array elements.
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map: Function (optional)
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Callback to invoke for each source element.
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thisArg: Any (optional)
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Callback execution context.
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Returns
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-------
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out: Uint32Array
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A typed array.
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Examples
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--------
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> function mapFcn( v ) { return v * 2; };
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> var arr = {{alias}}.from( [ 1, 2 ], mapFcn )
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<Uint32Array>[ 2, 4 ]
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{{alias}}.of( element0[, element1[, ...elementN]] )
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Creates a new typed array from a variable number of arguments.
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Parameters
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----------
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element0: number
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Array element.
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element1: number (optional)
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Array element.
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elementN: number (optional)
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Array elements.
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Returns
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-------
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out: Uint32Array
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A typed array.
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Examples
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--------
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> var arr = {{alias}}.of( 1, 2 )
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<Uint32Array>[ 1, 2 ]
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{{alias}}.BYTES_PER_ELEMENT
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Number of bytes per view element.
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Examples
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--------
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> {{alias}}.BYTES_PER_ELEMENT
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4
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{{alias}}.name
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Typed array constructor name.
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Examples
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--------
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> {{alias}}.name
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'Uint32Array'
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{{alias}}.prototype.buffer
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Read-only property which returns the ArrayBuffer referenced by the typed
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array.
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Examples
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--------
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> var arr = new {{alias}}( 5 );
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> arr.buffer
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<ArrayBuffer>
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{{alias}}.prototype.byteLength
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Read-only property which returns the length (in bytes) of the typed array.
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Examples
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--------
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> var arr = new {{alias}}( 5 );
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> arr.byteLength
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20
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{{alias}}.prototype.byteOffset
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Read-only property which returns the offset (in bytes) of the typed array
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from the start of its ArrayBuffer.
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Examples
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--------
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> var arr = new {{alias}}( 5 );
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> arr.byteOffset
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0
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{{alias}}.prototype.BYTES_PER_ELEMENT
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Number of bytes per view element.
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Examples
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--------
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> var arr = new {{alias}}( 5 );
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> arr.BYTES_PER_ELEMENT
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4
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{{alias}}.prototype.length
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Read-only property which returns the number of view elements.
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Examples
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--------
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> var arr = new {{alias}}( 5 );
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> arr.length
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5
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{{alias}}.prototype.copyWithin( target, start[, end] )
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Copies a sequence of elements within the array starting at `start` and
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ending at `end` (non-inclusive) to the position starting at `target`.
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Parameters
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----------
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target: integer
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Target start index position.
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start: integer
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Source start index position.
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end: integer (optional)
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Source end index position. Default: out.length.
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Returns
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-------
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out: Uint32Array
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Modified array.
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Examples
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--------
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> var arr = new {{alias}}( [ 1, 2, 3, 4, 5 ] );
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> arr.copyWithin( 3, 0, 2 );
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> arr[ 3 ]
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1
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> arr[ 4 ]
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2
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{{alias}}.prototype.entries()
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Returns an iterator for iterating over array key-value pairs.
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Returns
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-------
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iter: Iterator
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Iterator for iterating over array key-value pairs.
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Examples
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--------
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> var arr = new {{alias}}( [ 1, 2 ] );
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> it = arr.entries();
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> it.next().value
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[ 0, 1 ]
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> it.next().value
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[ 1, 2 ]
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> it.next().done
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true
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{{alias}}.prototype.every( predicate[, thisArg] )
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Tests whether all array elements pass a test implemented by a predicate
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function.
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A predicate function is provided the following arguments:
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- value: array element.
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- index: array index.
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- arr: array on which the method is invoked.
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Parameters
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----------
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predicate: Function
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Predicate function which tests array elements. If a predicate function
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returns a truthy value, an array element passes; otherwise, an array
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element fails.
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thisArg: Any (optional)
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Callback execution context.
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Returns
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-------
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bool: boolean
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Boolean indicating whether all array elements pass.
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Examples
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--------
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> var arr = new {{alias}}( [ 1, 2 ] );
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> function predicate( v ) { return ( v <= 1 ); };
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> arr.every( predicate )
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false
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{{alias}}.prototype.fill( value[, start[, end]] )
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Fills an array from a start index to an end index (non-inclusive) with a
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provided value.
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Parameters
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----------
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value: number
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Fill value.
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start: integer (optional)
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Start index. If less than zero, the start index is resolved relative to
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the last array element. Default: 0.
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end: integer (optional)
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End index (non-inclusive). If less than zero, the end index is resolved
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relative to the last array element. Default: out.length.
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Returns
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-------
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out: Uint32Array
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Modified array.
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Examples
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--------
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> var arr = new {{alias}}( [ 1, 2 ] );
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> arr.fill( 3 );
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> arr[ 0 ]
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3
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> arr[ 1 ]
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3
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{{alias}}.prototype.filter( predicate[, thisArg] )
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Creates a new array which includes those elements for which a predicate
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function returns a truthy value.
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A predicate function is provided the following arguments:
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- value: array element.
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- index: array index.
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- arr: array on which the method is invoked.
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The returned array has the same data type as the host array.
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If a predicate function does not return a truthy value for any array
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element, the method returns `null`.
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Parameters
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----------
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predicate: Function
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Predicate function which filters array elements. If a predicate function
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returns a truthy value, an array element is included in the output
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array; otherwise, an array element is not included in the output array.
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thisArg: Any (optional)
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Callback execution context.
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Returns
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-------
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out: Uint32Array
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A typed array.
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Examples
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--------
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> var arr1 = new {{alias}}( [ 1, 2, 3 ] );
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> function predicate( v ) { return ( v > 1 ); };
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> var arr2 = arr1.filter( predicate );
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> arr2.length
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2
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{{alias}}.prototype.find( predicate[, thisArg] )
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Returns the first array element for which a provided predicate function
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returns a truthy value.
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A predicate function is provided the following arguments:
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- value: array element.
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- index: array index.
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- arr: array on which the method is invoked.
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If a predicate function never returns a truthy value, the method returns
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`undefined`.
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Parameters
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----------
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predicate: Function
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Predicate function which tests array elements.
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thisArg: Any (optional)
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Callback execution context.
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Returns
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-------
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value: number|undefined
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Array element.
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Examples
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--------
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> var arr = new {{alias}}( [ 1, 2, 3 ] );
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> function predicate( v ) { return ( v > 2 ); };
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> var v = arr.find( predicate )
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3
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{{alias}}.prototype.findIndex( predicate[, thisArg] )
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Returns the index of the first array element for which a provided predicate
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function returns a truthy value.
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A predicate function is provided the following arguments:
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- value: array element.
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- index: array index.
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- arr: array on which the method is invoked.
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If a predicate function never returns a truthy value, the method returns
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`-1`.
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Parameters
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----------
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predicate: Function
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Predicate function which tests array elements.
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thisArg: Any (optional)
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Callback execution context.
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Returns
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-------
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idx: integer
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Array index.
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Examples
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--------
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> var arr = new {{alias}}( [ 1, 2, 3 ] );
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> function predicate( v ) { return ( v > 2 ); };
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> var idx = arr.findIndex( predicate )
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2
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{{alias}}.prototype.forEach( fcn[, thisArg] )
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Invokes a callback for each array element.
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A provided function is provided the following arguments:
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- value: array element.
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- index: array index.
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- arr: array on which the method is invoked.
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Parameters
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----------
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fcn: Function
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Function to invoke for each array element.
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thisArg: Any (optional)
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Callback execution context.
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Examples
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--------
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> var arr = new {{alias}}( [ 3, 2, 1 ] );
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> var str = ' ';
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> function fcn( v, i ) { str += i + ':' + v + ' '; };
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> arr.forEach( fcn );
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> str
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' 0:3 1:2 2:1 '
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{{alias}}.prototype.includes( searchElement[, fromIndex] )
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Returns a boolean indicating whether an array includes a search element.
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Parameters
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----------
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searchElement: number
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Search element.
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fromIndex: integer (optional)
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Array index from which to begin searching. If provided a negative value,
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the method resolves the start index relative to the last array element.
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Default: 0.
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Returns
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-------
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bool: boolean
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Boolean indicating whether an array includes a search element.
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Examples
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--------
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> var arr = new {{alias}}( [ 1, 2, 3 ] );
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> var bool = arr.includes( 4 )
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false
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> bool = arr.includes( 3 )
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true
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{{alias}}.prototype.indexOf( searchElement[, fromIndex] )
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Returns the index of the first array element strictly equal to a search
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element.
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If unable to locate a search element, the method returns `-1`.
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Parameters
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----------
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searchElement: number
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Search element.
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fromIndex: integer (optional)
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Array index from which to begin searching. If provided a negative value,
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the method resolves the start index relative to the last array element.
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Default: 0.
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Returns
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-------
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idx: integer
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Array index.
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Examples
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--------
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> var arr = new {{alias}}( [ 1, 2, 3 ] );
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> var idx = arr.indexOf( 4 )
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-1
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> idx = arr.indexOf( 3 )
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2
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{{alias}}.prototype.join( [separator] )
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Serializes an array by joining all array elements as a string.
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Parameters
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----------
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separator: string (optional)
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String delineating array elements. Default: ','.
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Returns
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-------
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str: string
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Array serialized as a string.
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Examples
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--------
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> var arr = new {{alias}}( [ 1, 2, 3 ] );
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> arr.join( '|' )
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'1|2|3'
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{{alias}}.prototype.keys()
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Returns an iterator for iterating over array keys.
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Returns
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-------
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iter: Iterator
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Iterator for iterating over array keys.
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Examples
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--------
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> var arr = new {{alias}}( [ 1, 2 ] );
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> it = arr.keys();
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> it.next().value
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0
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> it.next().value
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1
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> it.next().done
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true
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{{alias}}.prototype.lastIndexOf( searchElement[, fromIndex] )
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Returns the index of the last array element strictly equal to a search
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element.
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The method iterates from the last array element to the first array element.
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If unable to locate a search element, the method returns `-1`.
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Parameters
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----------
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searchElement: number
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Search element.
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fromIndex: integer (optional)
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Array index from which to begin searching. If provided a negative value,
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the method resolves the start index relative to the last array element.
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Default: -1.
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Returns
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-------
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idx: integer
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array index.
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Examples
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--------
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> var arr = new {{alias}}( [ 1, 0, 2, 0, 1 ] );
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> var idx = arr.lastIndexOf( 3 )
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-1
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> idx = arr.lastIndexOf( 0 )
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3
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{{alias}}.prototype.map( fcn[, thisArg] )
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Maps each array element to an element in a new typed array.
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A provided function is provided the following arguments:
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- value: array element.
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- index: array index.
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- arr: array on which the method is invoked.
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The returned array has the same data type as the host array.
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Parameters
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----------
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fcn: Function
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Function which maps array elements to elements in the new array.
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thisArg: Any (optional)
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Callback execution context.
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Returns
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-------
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out: Uint32Array
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A typed array.
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Examples
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--------
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> var arr1 = new {{alias}}( [ 1, 2, 3 ] );
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> function fcn( v ) { return v * 2; };
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> var arr2 = arr1.map( fcn );
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<Uint32Array>[ 2, 4, 6 ]
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{{alias}}.prototype.reduce( fcn[, initialValue] )
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Applies a function against an accumulator and each element in an array and
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returns the accumulated result.
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The provided function is provided the following arguments:
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- acc: accumulated result.
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- value: current array element.
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- index: index of the current array element.
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- arr: array on which the method is invoked.
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If provided an initial value, the method invokes a provided function with
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the initial value as the first argument and the first array element as the
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second argument.
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If not provided an initial value, the method invokes a provided function
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with the first array element as the first argument and the second array
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element as the second argument.
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Parameters
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----------
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fcn: Function
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Function to apply.
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initialValue: Any (optional)
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Initial accumulation value.
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Returns
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-------
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out: Any
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Accumulated result.
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Examples
|
|
--------
|
|
> var arr = new {{alias}}( [ 1, 2, 3 ] );
|
|
> function fcn( acc, v ) { return acc + (v*v); };
|
|
> var v = arr.reduce( fcn, 0 )
|
|
14
|
|
|
|
|
|
{{alias}}.prototype.reduceRight( fcn[, initialValue] )
|
|
Applies a function against an accumulator and each element in an array and
|
|
returns the accumulated result, iterating from right to left.
|
|
|
|
The provided function is provided the following arguments:
|
|
|
|
- acc: accumulated result.
|
|
- value: current array element.
|
|
- index: index of the current array element.
|
|
- arr: array on which the method is invoked.
|
|
|
|
If provided an initial value, the method invokes a provided function with
|
|
the initial value as the first argument and the last array element as the
|
|
second argument.
|
|
|
|
If not provided an initial value, the method invokes a provided function
|
|
with the last array element as the first argument and the second-to-last
|
|
array element as the second argument.
|
|
|
|
Parameters
|
|
----------
|
|
fcn: Function
|
|
Function to apply.
|
|
|
|
initialValue: Any (optional)
|
|
Initial accumulation value.
|
|
|
|
Returns
|
|
-------
|
|
out: Any
|
|
Accumulated result.
|
|
|
|
Examples
|
|
--------
|
|
> var arr = new {{alias}}( [ 1, 2, 3 ] );
|
|
> function fcn( acc, v ) { return acc + (v*v); };
|
|
> var v = arr.reduceRight( fcn, 0 )
|
|
14
|
|
|
|
|
|
{{alias}}.prototype.reverse()
|
|
Reverses an array *in-place*.
|
|
|
|
This method mutates the array on which the method is invoked.
|
|
|
|
Returns
|
|
-------
|
|
out: Uint32Array
|
|
Modified array.
|
|
|
|
Examples
|
|
--------
|
|
> var arr = new {{alias}}( [ 1, 2, 3 ] )
|
|
<Uint32Array>[ 1, 2, 3 ]
|
|
> arr.reverse()
|
|
<Uint32Array>[ 3, 2, 1 ]
|
|
|
|
|
|
{{alias}}.prototype.set( arr[, offset] )
|
|
Sets array elements.
|
|
|
|
Parameters
|
|
----------
|
|
arr: ArrayLike
|
|
Source array containing array values to set.
|
|
|
|
offset: integer (optional)
|
|
Array index at which to start writing values. Default: 0.
|
|
|
|
Examples
|
|
--------
|
|
> var arr = new {{alias}}( [ 1, 2, 3 ] );
|
|
> arr.set( [ 4, 4 ], 1 );
|
|
> arr[ 1 ]
|
|
4
|
|
> arr[ 2 ]
|
|
4
|
|
|
|
|
|
{{alias}}.prototype.slice( [begin[, end]] )
|
|
Copies array elements to a new array with the same underlying data type as
|
|
the host array.
|
|
|
|
If the method is unable to resolve indices to a non-empty array subsequence,
|
|
the method returns `null`.
|
|
|
|
Parameters
|
|
----------
|
|
begin: integer (optional)
|
|
Start element index (inclusive). If less than zero, the start index is
|
|
resolved relative to the last array element. Default: 0.
|
|
|
|
end: integer (optional)
|
|
End element index (exclusive). If less than zero, the end index is
|
|
resolved relative to the last array element. Default: arr.length.
|
|
|
|
Returns
|
|
-------
|
|
out: Uint32Array
|
|
A typed array.
|
|
|
|
Examples
|
|
--------
|
|
> var arr1 = new {{alias}}( [ 1, 2, 3 ] );
|
|
> var arr2 = arr1.slice( 1 );
|
|
> arr2.length
|
|
2
|
|
> arr2[ 0 ]
|
|
1
|
|
> arr2[ 1 ]
|
|
2
|
|
|
|
|
|
{{alias}}.prototype.some( predicate[, thisArg] )
|
|
Tests whether at least one array element passes a test implemented by a
|
|
predicate function.
|
|
|
|
A predicate function is provided the following arguments:
|
|
|
|
- value: array element.
|
|
- index: array index.
|
|
- arr: array on which the method is invoked.
|
|
|
|
Parameters
|
|
----------
|
|
predicate: Function
|
|
Predicate function which tests array elements. If a predicate function
|
|
returns a truthy value, a array element passes; otherwise, an array
|
|
element fails.
|
|
|
|
thisArg: Any (optional)
|
|
Callback execution context.
|
|
|
|
Returns
|
|
-------
|
|
bool: boolean
|
|
Boolean indicating whether at least one array element passes.
|
|
|
|
Examples
|
|
--------
|
|
> var arr = new {{alias}}( [ 1, 2 ] );
|
|
> function predicate( v ) { return ( v > 1 ); };
|
|
> arr.some( predicate )
|
|
true
|
|
|
|
|
|
{{alias}}.prototype.sort( [compareFunction] )
|
|
Sorts an array *in-place*.
|
|
|
|
The comparison function is provided two array elements per invocation: `a`
|
|
and `b`.
|
|
|
|
The comparison function return value determines the sort order as follows:
|
|
|
|
- If the comparison function returns a value less than zero, then the method
|
|
sorts `a` to an index lower than `b` (i.e., `a` should come *before* `b`).
|
|
|
|
- If the comparison function returns a value greater than zero, then the
|
|
method sorts `a` to an index higher than `b` (i.e., `b` should come *before*
|
|
`a`).
|
|
|
|
- If the comparison function returns zero, then the relative order of `a`
|
|
and `b` should remain unchanged.
|
|
|
|
This method mutates the array on which the method is invoked.
|
|
|
|
Parameters
|
|
----------
|
|
compareFunction: Function (optional)
|
|
Function which specifies the sort order. The default sort order is
|
|
ascending order.
|
|
|
|
Returns
|
|
-------
|
|
out: Uint32Array
|
|
Modified array.
|
|
|
|
Examples
|
|
--------
|
|
> var arr = new {{alias}}( [ 1, 2, 0, 2, 1 ] );
|
|
> arr.sort()
|
|
<Uint32Array>[ 0, 1, 1, 2, 2 ]
|
|
|
|
|
|
{{alias}}.prototype.subarray( [begin[, end]] )
|
|
Creates a new typed array over the same underlying ArrayBuffer and with the
|
|
same underlying data type as the host array.
|
|
|
|
If the method is unable to resolve indices to a non-empty array subsequence,
|
|
the method returns an empty typed array.
|
|
|
|
Parameters
|
|
----------
|
|
begin: integer (optional)
|
|
Start element index (inclusive). If less than zero, the start index is
|
|
resolved relative to the last array element. Default: 0.
|
|
|
|
end: integer (optional)
|
|
End element index (exclusive). If less than zero, the end index is
|
|
resolved relative to the last array element. Default: arr.length.
|
|
|
|
Returns
|
|
-------
|
|
out: Uint32Array
|
|
A new typed array view.
|
|
|
|
Examples
|
|
--------
|
|
> var arr1 = new {{alias}}( [ 1, 2, 3, 4, 5 ] );
|
|
> var arr2 = arr1.subarray( 2 )
|
|
<Uint32Array>[ 3, 4, 5 ]
|
|
|
|
|
|
{{alias}}.prototype.toLocaleString( [locales[, options]] )
|
|
Serializes an array as a locale-specific string.
|
|
|
|
Parameters
|
|
----------
|
|
locales: string|Array<string> (optional)
|
|
A BCP 47 language tag, or an array of such tags.
|
|
|
|
options: Object (optional)
|
|
Options.
|
|
|
|
Returns
|
|
-------
|
|
str: string
|
|
A typed array string representation.
|
|
|
|
Examples
|
|
--------
|
|
> var arr = new {{alias}}( [ 1, 2, 3 ] );
|
|
> arr.toLocaleString()
|
|
'1,2,3'
|
|
|
|
|
|
{{alias}}.prototype.toString()
|
|
Serializes an array as a string.
|
|
|
|
Returns
|
|
-------
|
|
str: string
|
|
A typed array string representation.
|
|
|
|
Examples
|
|
--------
|
|
> var arr = new {{alias}}( [ 1, 2, 3 ] );
|
|
> arr.toString()
|
|
'1,2,3'
|
|
|
|
|
|
{{alias}}.prototype.values()
|
|
Returns an iterator for iterating over array elements.
|
|
|
|
Returns
|
|
-------
|
|
iter: Iterator
|
|
Iterator for iterating over array elements.
|
|
|
|
Examples
|
|
--------
|
|
> var arr = new {{alias}}( [ 1, 2 ] );
|
|
> it = arr.values();
|
|
> it.next().value
|
|
1
|
|
> it.next().value
|
|
2
|
|
> it.next().done
|
|
true
|
|
|
|
|
|
See Also
|
|
--------
|
|
|