instance method

Set#subtract

(::_Each[A]) -> self

subtract(enum) → self

static VALUE
set_i_subtract(VALUE set, VALUE other)
{
    rb_check_frozen(set);
    set_remove_enum_from(set, other);
    return set;
}

Deletes every element that appears in the given enumerable object and returns self.

See also #subset? #superset? #size #to_a also in 4.1 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0