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array_map in php, with break
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| <?php | |
| class BreakOut extends Exception {} | |
| function mapGenerator(array $arr, $callback) | |
| { | |
| $ret = []; | |
| foreach ($arr as $val) { | |
| try { | |
| yield $callback($val); | |
| } catch (BreakOut $e) { | |
| return; | |
| } | |
| } | |
| } | |
| $a = range(1, 10); | |
| $callback = function($val) { | |
| if ($val > 5) { | |
| throw new BreakOut; | |
| } | |
| return $val * $val; | |
| }; | |
| foreach (mapGenerator($a, $callback) as $v) { | |
| echo $v . PHP_EOL; | |
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <?php | |
| class BreakOut extends Exception {} | |
| function map(array $arr, $callback) | |
| { | |
| $ret = []; | |
| foreach ($arr as $val) { | |
| try { | |
| $ret[] = $callback($val); | |
| } catch (BreakOut $e) { | |
| break; | |
| } | |
| } | |
| return $ret; | |
| } | |
| $a = range(1, 10); | |
| $callback = function($val) { | |
| if ($val > 5) { | |
| throw new BreakOut; | |
| } | |
| return $val * $val; | |
| }; | |
| print_r(map($a, $callback)); |
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