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fix partial application of function with applied placeholders

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This commit is contained in:
Kacper Donat 2018-09-02 20:26:49 +02:00
parent 024d97d46c
commit f8ea3de9f7
2 changed files with 10 additions and 1 deletions
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2
src/Utils/PartiallyAppliedFunction.php
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@ -48,7 +48,7 @@ class PartiallyAppliedFunction implements Decorator
{ {
$result = []; $result = [];
foreach ($this->arguments as $argument) { foreach ($this->arguments as $argument) {
$result[] = $argument === PLACEHOLDER $result[] = $argument === PLACEHOLDER && !empty($args)
? array_shift($args) ? array_shift($args)
: $argument; : $argument;
} }

9
tests/PartialApplicationTest.php
View File

@ -102,4 +102,13 @@ class PartialApplicationTest extends \PHPUnit\Framework\TestCase
$this->assertEquals(6, $applied(3)); $this->assertEquals(6, $applied(3));
$this->assertEquals(24, $applied(4)); $this->assertEquals(24, $applied(4));
} }
public function testPartialApplicationOfAppliedFunctionWithPlaceholders()
{
$applied = f\partial('array_merge', _, _, ['c']);
$double = f\partial($applied, ['a']);
$this->assertEquals(['a', 'b', 'c', 'd'], $double(['b'], ['d']));
}
} }