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<?php function uppercase(Traversable $in) { foreach ($in as $word) { yield strtoupper($word); } } function reverse(Traversable $in) { foreach ($in as $word) { yield strrev($word); } } function each_println(Traversable $in) { foreach ($in as $line) { echo "$line\n"; } } function allAbove(Traversable $in) { foreach($in as $word) { yield array('upper' => strtoupper($word), 'rev' => strrev($word), 'combined' => strrev(strtoupper($word))); } } each_println(reverse(uppercase(new ArrayIterator(["foo", "bar", "baz"])))); foreach(allAbove(new ArrayIterator("foo", "bar", "baz")) as $item) { each_println($item); }
Output for git.master, git.master_jit, rfc.property-hooks
OOF RAB ZAB Fatal error: Uncaught ArgumentCountError: ArrayIterator::__construct() expects at most 2 arguments, 3 given in /in/p5erh:32 Stack trace: #0 /in/p5erh(32): ArrayIterator->__construct('foo', 'bar', 'baz') #1 {main} thrown in /in/p5erh on line 32
Process exited with code 255.

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