method

keep_if

Ruby latest stable (v2_5_5) - 0 notes - Class: Array

keep_if() public

Deletes every element of self for which the given block evaluates to false.

If no block is given, an Enumerator is returned instead.

a = %w{ a b c d e f }
a.keep_if { |v| v =~ /[aeiou]/ }  #=> ["a", "e"]

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static VALUE
rb_ary_keep_if(VALUE ary)
{
    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
    rb_ary_select_bang(ary);
    return ary;
}