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=proto
void duk_replace(duk_context *ctx, int to_index);
=stack
[ ... old(to_index)! ... val! ] -> [ ... val(to_index)! ... ]
=summary
<p>Replace value at <code>to_index</code> with a value popped from the
stack top. If <code>to_index</code> is an invalid index, throws an error.</p>
<div class="note">
Negative indices are evaluated prior to popping the value at the stack
top. This is also illustrated by the example.
</div>
=example
duk_push_int(ctx, 123);
duk_push_int(ctx, 234);
duk_push_int(ctx, 345); /* -> [ 123 234 345 ] */
duk_push_string(ctx, "foo"); /* -> [ 123 234 345 "foo" ] */
duk_replace(ctx, -3); /* -> [ 123 "foo" 345 ] */
=tags
stack
=seealso
duk_insert