Filter: Difference between revisions

<syntaxhighlight lang="ruby">var arr = [1,2,3,4,5];

var new = arr.grep {|i| i.is_even %% 2};

say new.dump; # => [2, 4]

arr.grep! {|i| i.is_even %% 2};

say arr.dump; # => [2, 4]</syntaxhighlight>