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name: duk_is_valid_index
proto: |
duk_bool_t duk_is_valid_index(duk_context *ctx, duk_idx_t index);
stack: |
[ ... val! ... ]
summary: |
<p>Validate argument index, return 1 if index is valid, 0 otherwise.</p>
example: |
if (duk_is_valid_index(ctx, -3)) {
printf("index -3 is valid\n");
} else {
printf("index -3 is not valid\n");
}
tags:
- stack
seealso:
- duk_require_valid_index
introduced: 1.0.0