From: Pit Capitain <pit@...>
Date: 2006-03-25T21:13:22+09:00
Subject: Re: require a certain version of the ruby interpreter

dblack@wobblini.net schrieb:
> Here's yet another variation on the theme.  (I thought I'd posted this
> in my previous post but I didn't.)
> 
> require 'scanf'
> def ensure_version(need)
>   need.scanf("%d.%d.%d").
>        zip(RUBY_VERSION.scanf("%d.%d.%d")).any? do |a,b|
>     a > b
>   end and raise "Requires at least #{need}"
> end

Both the solutions using any? aren't correct:

   puts RUBY_VERSION       # => 1.8.4
   ensure_version "1.6.8"  # => Requires at least 1.6.8 (RuntimeError)

Regards,
Pit