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<?php $mapped = array_map(function($a) { return $a * 2; }, (function() { yield "foo" => 1; yield "bar" => 21; })()); var_dump($mapped);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: array_map(): Argument #2 ($array) must be of type array, Generator given in /in/74VZY:3 Stack trace: #0 /in/74VZY(3): array_map(Object(Closure), Object(Generator)) #1 {main} thrown in /in/74VZY on line 3
Process exited with code 255.

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