HH\Iterable::filter

Returns an Iterable containing the values of the current Iterable that meet a supplied condition

public function filter(
  (function(Tv): bool) $fn,
): Iterable<Tv>;

Only values that meet a certain criteria are affected by a call to filter(), while all values are affected by a call to map().

Guide

• Examples

Parameters

• (function(Tv): bool) $fn - The callback containing the condition to apply to the Itearble values.

Returns

• Iterable<Tv> - an Iterable containing the values after a user-specified condition is applied.