Ruby On Rails Interview Questions and Answers
Question: How can you fire a method when a module is inside a class?Answer:Fire a method inside a class is very simple. Say you have a module file trig.rb: module Trig PI = 3.141592654 def Trig.sin(x) # .. end def Trig.cos(x) # .. end end Now you simply import this module inside your class and invoke the method using the “module.method_name” syntax as shown below require "trig" class myclass y = Trig.sin(Trig::PI/4) This type of invocation ensures that the right module method gets called. |
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