Prepend::__invoke()   A
last analyzed

Complexity

Conditions 1
Paths 1

Size

Total Lines 15
Code Lines 3

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 4
CRAP Score 1

Importance

Changes 0
Metric Value
cc 1
eloc 3
nc 1
nop 0
dl 0
loc 15
ccs 4
cts 4
cp 1
crap 1
rs 10
c 0
b 0
f 0
1
<?php
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declare(strict_types=1);
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namespace loophp\collection\Operation;
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use Closure;
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use Generator;
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use loophp\iterators\ConcatIterableAggregate;
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/**
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 * @immutable
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 *
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 * @template TKey
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 * @template T
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 */
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final class Prepend extends AbstractOperation
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{
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    /**
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     * @template U
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     *
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     * @return Closure(array<U>): Closure(iterable<TKey, T>): iterable<int|TKey, T|U>
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     */
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    public function __invoke(): Closure
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    {
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        return
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            /**
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             * @param array<U> $items
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             *
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             * @return Closure(iterable<TKey, T>): iterable<int|TKey, T|U>
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             */
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            static fn (array $items): Closure =>
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                /**
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                 * @param iterable<TKey, T> $iterable
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                 *
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                 * @return Generator<int|TKey, T|U>
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                 */
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                static fn (iterable $iterable): Generator => yield from new ConcatIterableAggregate([$items, $iterable]);
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    }
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}
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