{{alias}}( arr, prop[, options] )
    Extracts a property value from each element of an object array.

    The function skips `null` and `undefined` array elements.

    Extracted values are not cloned.

    Parameters
    ----------
    arr: Array
        Source array.

    prop: string
        Property to access.

    options: Object (optional)
        Options.

    options.copy: boolean (optional)
        Boolean indicating whether to return a new data structure. To mutate the
        input data structure (e.g., when input values can be discarded or when
        optimizing memory usage), set the `copy` option to `false`. Default:
        true.

    Returns
    -------
    out: Array
        Destination array.

    Examples
    --------
    > var arr = [
    ...     { 'a': 1, 'b': 2 },
    ...     { 'a': 0.5, 'b': 3 }
    ... ];
    > var out = {{alias}}( arr, 'a' )
    [ 1, 0.5 ]

    > arr = [
    ...     { 'a': 1, 'b': 2 },
    ...     { 'a': 0.5, 'b': 3 }
    ... ];
    > out = {{alias}}( arr, 'a', { 'copy': false } )
    [ 1, 0.5 ]
    > var bool = ( arr[ 0 ] === out[ 0 ] )
    true

    See Also
    --------