From: Jan Svitok <jan.svitok@...>
Date: 2006-10-02T22:25:06+09:00
Subject: Re: Creating dynamically named singleton methods. Syntax question.

On 10/2/06, Luke Stark <Luke.Stark@mathworks.com> wrote:
> You may create singleton methods like so:
>
> foo = MyThing.new
>
> def foo.do_stuff
>   "code"
> end
>
> But I cannot seem to grock the syntax that would allow me to name the
> method from a variable. Such as:
>
> foo = MyThing.new
> bar = "do_stuff"
> def foo.%{#{bar}} #This is totally wrong I think.
>   "code"
> end
>
> Any suggestions? I'm starting to get a spinning head. :)
>
> To be clear, I want to create a singleton method on the instance of
> MyThing, not add the method to the MyThing class.
>
> This is mentioned here:
>
> http://www.rubyist.net/~slagell/ruby/singletonmethods.html
>
> but I'd like to do it dynamically.
>
> Many thanks!

foo = Object.new

def foo.bar
	"bar"
end

meth = "baz"
eval <<-EOF
def foo.#{meth} ; "#{meth}" ; end
EOF

meth = "bax"
foo.instance_eval <<-EOF
def #{meth} ; "#{meth}" ; end
EOF

puts foo.bar
puts foo.baz
puts foo.bax