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name: duk_strict_equals
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proto: |
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duk_bool_t duk_strict_equals(duk_context *ctx, duk_idx_t idx1, duk_idx_t idx2);
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stack: |
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[ ... val1! ... val2! ... ]
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summary: |
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<p>Compare values at <code>idx1</code> and <code>idx2</code> for equality.
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Returns 1 if values are considered equal using Ecmascript
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<a href="http://www.ecma-international.org/ecma-262/5.1/#sec-11.9.4">Strict Equals</a>
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operator (<code>===</code>) semantics, otherwise returns 0. Also returns 0 if either index
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is invalid.</p>
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<p>Because
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<a href="http://www.ecma-international.org/ecma-262/5.1/#sec-11.9.6">The Strict Equality Comparison Algorithm</a>
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used by the Strict Equals operator performs no value coercion, the comparison cannot have
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side effects and cannot throw an error.</p>
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<p>Comparison algorithm for Duktape custom types is described in
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<a href="http://duktape.org/guide.html#strict-equality-algorithm">Strict equality</a>.</p>
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example: |
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if (duk_strict_equals(ctx, -3, -7)) {
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printf("values at indices -3 and -7 are strictly equal\n");
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}
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tags:
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- compare
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seealso:
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- duk_equals
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introduced: 1.0.0
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