Ruby On Rails Interview Questions and Answers
Ques. How can you implement method overloading in Ruby on Rails?Ans.
This one’s a tricky question. If you have a background in Java then you must know that method overloading is simply multiple methods with same name but different signatures/parameters.
In the case of Ruby method overloading is not supported.
However, it does support the overall goal of passing variable number of parameters to the same method. You would implement it like this:
class MyClass def initialize(*args) if args.size < 2 || args.size > 3 puts 'This method takes either 2 or 3 arguments' else if args.size == 2 puts 'Found two arguments' else puts 'Found three arguments' end end end end
The output can be seen here:
MyClass.new([10, 23], 4, 10) Found three arguments MyClass.new([10, 23], [14, 13]) Found two arguments
SO: You can get the same effect as method overloading but you just have to manage the number of variables inside your method itself.
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