Test if two arguments are the same value.
npm install @stdlib/assert-is-same-value
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var isSameValue = require( '@stdlib/assert-is-same-value' );
Tests if two arguments a
and b
are the same value.
var bool = isSameValue( false, false );
// returns true
bool = isSameValue( '', '' );
// returns true
bool = isSameValue( {}, {} );
// returns false
In contrast to the strict equality operator ===
, the function distinguishes between +0
and -0
and treats NaNs
as the same value.
var bool = ( 0.0 === -0.0 );
// returns true
bool = isSameValue( 0.0, -0.0 );
// returns false
bool = isSameValue( -0.0, -0.0 );
// returns true
bool = ( NaN === NaN );
// returns false
bool = isSameValue( NaN, NaN );
// returns true
- The function implements the SameValue Algorithm as specified in ECMAScript 5.
var isSameValue = require( '@stdlib/assert-is-same-value' );
var bool = isSameValue( true, true );
// returns true
bool = isSameValue( true, false );
// returns false
bool = isSameValue( 'beep', 'beep' );
// returns true
bool = isSameValue( 3.14, 3.14 );
// returns true
bool = isSameValue( null, null );
// returns true
bool = isSameValue( 0.0, 0.0 );
// returns true
bool = isSameValue( -0.0, 0.0 );
// returns false
bool = isSameValue( NaN, NaN );
// returns true
bool = isSameValue( {}, {} );
// returns false
bool = isSameValue( [], [] );
// returns false
bool = isSameValue( isSameValue, isSameValue );
// returns true
@stdlib/assert/is-same-value-zero
: test if two arguments are the same value.@stdlib/assert/is-strict-equal
: test if two arguments are strictly equal.
This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.
See LICENSE.
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