From: James Deuchar <jamesdeuchar@...>
Date: 2006-08-30T01:00:48+09:00
Subject: Testing a string's value is a positive integer

Hi,

I'm trying to find an nice way of verifying that the value of a String 
object (from the RoR params) contains a positive integer value.

Casting my string to_i and then testing that it is_a(Numeric) and is > 0 
doesn't do the trick because the to_i method converts something like 
'1.1' to a Fixnum of value 1 which would then pass the test when it 
shouldn't...

I feel certain I must be missing a trick here...am about to go down the 
path of regexp which feels...wrong?

Any advice for a newcomer would be gratefully received!

Thanks

James



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