Question

I am trying to add the following method to the Math class in Ruby on Rails:

class Math   def self.round_with_precision(number, precision)     scalar = 10.0 ** precision     number = number * scalar     number = number.round     number = number / scalar     return number;   end end 

I then added the following to my environment.rb:

require 'lib/math' 

When I open up the Rails console I get the following error: ‘./lib/math.rb:2:TypeError Math is not a class’

It seems like I’m overlooking something very simple.

Any thoughts?

Thanks in advance for your help.

Answer 1

Math is a module, just rename class to module.