method

keep_if

v2_6_3 - Show latest stable - 0 notes - Class: Array

keep_if() public

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

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"]
a                                  #=> ["a", "e"]

See also Array#select!.

Show source

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