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=proto
int duk_get_prop_index(duk_context *ctx, int obj_index, unsigned int arr_index);
=stack
[ ... obj! ... ] -> [ ... obj! ... val! ] (if key exists)
[ ... obj! ... ] -> [ ... obj! ... undefined! ] (if key doesn't exist)
=summary
<p>Like <code><a href="#duk_get_prop">duk_get_prop()</a></code>,
but the property name is given as an unsigned integer
<code>arr_index</code>. This is especially useful for accessing
array elements (but is not limited to that).</p>
<p>Conceptually the number is coerced to a string for the property
read, e.g. <code>123</code> would be equivalent to a property name
<code>"123"</code>. Duktape avoids an explicit coercion whenever
possible.</p>
=example
duk_get_prop_index(ctx, -3, 123);
printf("obj[123] = %s\n", duk_to_string(ctx, -1));
duk_pop(ctx);
=tags
property