3.0 KiB
3.0 KiB
Symbol
Symbol factory.
Usage
var Symbol = require( '@stdlib/symbol/ctor' );
Symbol( [description] )
Returns a Symbol
primitive.
var s = Symbol();
// returns <symbol>
To aid debugging, provide a symbol description
.
var s = Symbol( 'beep' );
// returns <symbol>
Notes
- Unlike conventional constructors, the function does not support the
new
keyword. - The function is only supported in environments which support symbols. In non-supporting environments, the value is
undefined
.
Examples
var hasSymbolSupport = require( '@stdlib/assert/has-symbol-support' );
var Symbol = require( '@stdlib/symbol/ctor' );
var s;
if ( hasSymbolSupport() ) {
s = Symbol( 'beep' );
// Print the value type:
console.log( typeof s );
// => 'symbol'
// Serialize the symbol as a string:
console.log( s.toString() );
// => 'Symbol(beep)'
// Test symbol equality:
console.log( s === Symbol( 'beep' ) );
// => false
} else {
console.log( 'Environment does not support symbols.' );
}