Getting an indication of the number of arguments accepted by a method
Jun 16
2008
2008
Comments Off
class Object def arguments?(*methods) methods.each do |method| begin rval = self.method(method).arity if rval > 0 puts "'#{method}' takes fixed (#{rval}) number of argument" elsif rval < 0 puts "'#{method}' takes variable number of arguments" elsif rval == 0 puts "'#{method}' takes no arguments" end rescue puts $! end end end end String.new.arguments?(:size, :to_i, :scan, :flatten)
