gistfile1.py

    classdef.app_method("""
    def each
        unless self.begin.is_a? Integer
            raise TypeError, "can't iterate from Float"
        end
        i = self.begin
        lim = self.end
        lim += 0.1 unless self.exclude_end?
        while i < lim
            yield i
            i += 1
        end
    end
    """)