Checking if a variable is not nil and not zero in ruby

Question

I am using the following code to check if a variable is not nil and not zero

if(discount != nil && discount != 0) 
  ...
end

Is the

Answer 1

You can take advantage of the NilClass provided #to_i method, which will return zero for nil values:

unless discount.to_i.zero?
  # Code here
end

If discount can be fractional numbers, you can use #to_f instead, to prevent the number from being rounded to zero.