get fraction part of a decimal number

Question

I am trying to get a fraction part of a decimal number in rails. For example I have a number, that "1.23" and I want to get "23" It is may be too easy but, does anyone have any idea about how can I do?

Answer 1

Try to use modulo method:

1.23.modulo(1) => 0.23 

Read more here: http://www.ruby-doc.org/core-1.9.3/Numeric.html#method-i-modulo

Or you can convert float to integer and substract it from original float value.

1.23 - 1.23.to_i => 0.23 

Answer 2

I am not sure if it is the easiest way to do it - but you can simply split the number using "." character - like this:

number = 1.23 parts = number.to_s.split(".") result = parts.count > 1 ? parts[1].to_s : 0