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name: duk_is_c_function
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proto: |
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duk_bool_t duk_is_c_function(duk_context *ctx, duk_idx_t idx);
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stack: |
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[ ... val! ... ]
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summary: |
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<p>Returns 1 if value at <code>idx</code> is a Function object and is
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assocated with a C function, otherwise returns 0.
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If <code>idx</code> is invalid, also returns 0.</p>
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<p>An example of an underlying C function observing the Duktape/C API
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calling convention:</p>
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<pre class="c-code">
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int my_func(duk_context *ctx) {
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/* ... */
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}
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</pre>
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example: |
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if (duk_is_c_function(ctx, -3)) {
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/* ... */
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}
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tags:
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- stack
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- function
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introduced: 1.0.0
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