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<?php $foo = function () { var_dump('foo'); yield 1; yield 2; yield 3; }; $iterator = new CachingIterator($foo()); foreach ($iterator as $value) { var_dump($value); } foreach ($iterator as $value) { var_dump($value); }
Output for git.master, git.master_jit, rfc.property-hooks
string(3) "foo" int(1) int(2) int(3) Fatal error: Uncaught Exception: Cannot rewind a generator that was already run in /in/dgAFs:16 Stack trace: #0 /in/dgAFs(16): CachingIterator->rewind() #1 {main} thrown in /in/dgAFs on line 16
Process exited with code 255.

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