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[8.x] Add reduce with keys to collections and lazy collections #35839

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Merged
merged 4 commits into from
Jan 12, 2021
Merged

[8.x] Add reduce with keys to collections and lazy collections #35839

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31dbc46
add reduce with keys to collections
mokhosh Jan 10, 2021
4777a54
add reduce with keys to lazy collections
mokhosh Jan 10, 2021
1b788e7
add test for reduce with keys
mokhosh Jan 10, 2021
b84aaec
fix style
mokhosh Jan 10, 2021
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add reduce with keys to collections
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@mokhosh
mokhosh committed Jan 10, 2021
commit 31dbc46a75d18bdccc6183994e68f1cbd90953ca
18 changes: 18 additions & 0 deletions src/Illuminate/Collections/Collection.php
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Original file line number Diff line number Diff line change
Expand Up @@ -884,6 +884,24 @@ public function reduce(callable $callback, $initial = null)
return array_reduce($this->items, $callback, $initial);
}

/**
* Reduce an associative collection to a single value.
*
* @param callable $callback
* @param mixed $initial
* @return mixed
*/
public function reduceWithKeys(callable $callback, $initial = null)
{
$result = $initial;

foreach($this->items as $key => $value) {
$result = $callback($result, $value, $key);
}

return $result;
}

/**
* Replace the collection items with the given items.
*
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