ConstVector::filter

Returns a ConstVector containing the values of the current ConstVector that meet a supplied condition

public function filter(
  (function(Tv): bool) $fn,
): ConstVector<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 $fn containing the condition to apply to the ConstVector values.

Returns

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