From: Yasuo Saito <y_saito@...10.freecom.ne.jp>
Date: 2002-06-28T23:33:16+09:00
Subject: Re: Negation of regular expression


> > If any regular expression r is given,
> > how can I write the negation of r in Ruby?
> >
> > I want something like operator ! in Perl -- eg. grep(!/foo/, @bar)
> > --, or option -v of egrep -- eg. egrep -v foo file --.
> 
> @bar.reject { |ea| ea ~ /foo/ }

Thank you for your answer.
But, how should I do in the following case?

class A
def initialize(string)
    @string = string
end
def execute(regexp)
    if (@string =~ regexp) then
        # ...
    else
        # ...
    end
end
end

class B
def execute(a, regexp)
    a.execute(!regexp) # ERROR... How should I do?
end
end

B.new.execute(A.new("foo"), /bar/)



--
Y.Saito