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22 lines
582 B
22 lines
582 B
8 years ago
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name: duk_opt_number
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proto: |
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duk_double_t duk_opt_number(duk_context *ctx, duk_idx_t idx, duk_double_t def_value);
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stack: |
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[ ... val! ... ]
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summary: |
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<p>Get the number value at <code>idx</code> without modifying or coercing
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the value. If the value is <code>undefined</code> or the index is invalid,
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<code>def_value</code> default value is returned. In other cases
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(<code>null</code> or non-matching type) throws an error.</p>
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example: |
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double backoff_multiplier = (double) duk_opt_number(ctx, 2, 1.5); /* default: 1.5 */
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tags:
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- stack
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introduced: 2.1.0
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