From: Joachim Wuttke <wuttke1@...>
Date: 2004-10-04T05:33:09+09:00
Subject: how to escape variable expansion in a block

Dear experts:
I am not happy with the following code fragment.
It works, but the introduction of the auxiliary
variable �this� is not very elegant. Is there another
way to tell the TkButton constructor that  �buttonPressed�
is a member of the class it was called from ?
Regards, Joachim


class MyClass
    def initialize( frame )
        ...
        this = self # <- this is ugly, though it solves the problem
        TkButton.new( frame ) {
            text 'press here'
            command proc { this.buttonPressed } # <- here is the problem
        }
        ...
    end
    def buttonPressed
        puts "here we are"
    end
end



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