20 lines
303 B
PHP
20 lines
303 B
PHP
<?php
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namespace nur\mapper\base\impl;
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use nur\mapper\base\Mapper;
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class ReduceMapper extends Mapper {
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private static $sum;
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static function sum(): int {
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return self::$sum;
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}
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function setup(): void {
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self::$sum = 0;
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}
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function mapper($item) {
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return self::$sum += $item;
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}
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} |