How to compare versions in Ruby?

Question

How to write a piece of code to compare some versions strings and get the newest?

For example strings like: \'0.1\', \'0.2.1\', \'0.44\'.

Answer 1

You can use the Versionomy gem (available at github):

require 'versionomy'

v1 = Versionomy.parse('0.1')
v2 = Versionomy.parse('0.2.1')
v3 = Versionomy.parse('0.44')

v1 < v2  # => true
v2 < v3  # => true

v1 > v2  # => false
v2 > v3  # => false