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Ds\Map::filterCreates a new map using a callable to determine which pairs to include Descriptionpublic Ds\Map Ds\Map::filter(callable
$callback = ?)Creates a new map using a callable to determine which pairs to include. Parameters
Return Values
A new map containing all the pairs for which
either the ExamplesExample #1 Ds\Map::filter example using callback function
The above example will output something similar to: object(Ds\Map)#3 (3) { [0]=> object(Ds\Pair)#2 (2) { ["key"]=> int(0) ["value"]=> string(1) "a" } [1]=> object(Ds\Pair)#4 (2) { ["key"]=> int(2) ["value"]=> string(1) "c" } [2]=> object(Ds\Pair)#5 (2) { ["key"]=> int(4) ["value"]=> string(1) "e" } } Example #2 Ds\Map::filter example without a callback function
The above example will output something similar to: object(Ds\Map)#2 (3) { [0]=> int(1) [1]=> string(1) "a" [2]=> bool(true) } |