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The Tk toolkit is a scripted GUI toolkit that is designed to be used from dynamic languages (initially Tcl, but also Perl and Python).

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Drawing colored circles using Ruby and Tk

You should define arrays with [] not Array.new circs should be $circs in case you wrap your loop in some function. Before drawing can be turned into this : def before_drawing() temp_a = $point_ …
Aleksandar's user avatar