=proto
void duk_concat(duk_context *ctx, duk_idx_t count);

=stack
[ ... val1! ...! valN! ] -> [ ... result! ]

=summary
<p>Concatenate zero or more values into a result string.  The input values
are automatically coerced with
<a href="http://www.ecma-international.org/ecma-262/5.1/#sec-9.8">ToString()</a>.</p>

<p>This primitive minimizes the number of intermediate string interning
operations and is better than concatenating strings manually.</p>

=example
duk_push_string(ctx, "foo");
duk_push_int(ctx, 123);
duk_push_true(ctx);
duk_concat(ctx, 3);

printf("result: %s\n", duk_get_string(ctx, -1));  /* "foo123true" */
duk_pop(ctx);

=tags
string

=seealso
duk_join

=introduced
1.0.0