From: Robert Klemme <bob.news@...>
Date: 2004-09-09T00:30:07+09:00
Subject: Re: method by string ?


"Roeland Moors" <roelandmoors@telenet.be> schrieb im Newsbeitrag
news:20040908150955.GA6939@laptop...
> On Thu, Sep 09, 2004 at 12:02:24AM +0900, Roeland Moors wrote:
> > I'm creating a program which uses a ruby source file as config
> > file.
> >
> > I don't know which methods are defined in this config file.
> >
> > The problem I have is that I would like to run a method with the same
> > name as a string.
> >
> > Example:
> > This is the config file
> >
> > class Main
> >     def test1
> >         puts 'test1'
> >     end
> >
> >     def test2
> >         puts 'test2'
> >     end
> > end
> >
> >
> > This is the main source:
> >
> > $method = "test1"
> > $mode = Main.new
> >
> > # this ofcours doesn't work:
> > $mode.$method
> >
> > How should I do this?
> >
>
> Stupid me:
>
> $mode.method($method)

No, that just returns the method object.  You then still need to invoke
it.

>> "foo".method("concat")
=> #<Method: String#concat>
>> "foo".method("concat").call("xxx")
=> "fooxxx"

But #send() is much simpler.

Btw, you know that you can do

testMethods = $mode.methods.select {|m| /^test/ =~ m}

or even

$mode.methods.select {|m| /^test/ =~ m}.each do |m|
  $mode.send m
end

or

$mode.methods.each do |m|
  $mode.send( m ) if /^test/ =~ m
end

But it's even more simple to use TestUnit for this...

Kind regards

    robert

>
>
> > -- 
> > Roeland
> >
> >
>
>