From: "Simon Kröger" <SimonKroeger@...>
Date: 2006-03-25T21:11:27+09:00
Subject: Re: require a certain version of the ruby interpreter

>> [...]
>> :) Even I couldn't find an excuse for inject on this one. The best I
>> could do was:
>>
>> def ensure_version(v)
>>   raise "need #{v}" if VERSION.split('.').zip(v.split('.')).any?
>> {|a,b| a < b}
>> end
> 
> Nice, too!  I like the approach with any?.

Yeah, me too. But its a bit buggy:

v = '1.8.5'
p '1.8.4'.split('.').zip(v.split('.')).any? {|a,b| a < b}
#=> true

v = '0.0.9'
p '1.8.4'.split('.').zip(v.split('.')).any? {|a,b| a < b}
#=> true

>> (given that we don't need to worry about two-digit versions of course).

we could just use string compare, right? (no inject, no any?, no fun of
course :))

what about

VERSION.gsub(/(\d+)/){$1.to_i.chr} >= v.gsub(/(\d+)/){$1.to_i.chr}

this works up to version 255.255.255 *g*

cheers

Simon