From: James Edward Gray II <james@...>
Date: 2005-12-22T13:20:04+09:00
Subject: Re: String > Integer Conversion Problem

On Dec 21, 2005, at 6:13 PM, Jacob Fugal wrote:

> On 12/21/05, Timothy Hunter <cyclists@nc.rr.com> wrote:
>> The Integer() method raises ArgumentError if given an empty,
>> non-numeric, or otherwise non-well-formed string.
>
> On 12/21/05, James Edward Gray II <james@grayproductions.net> wrote:
>> if ARGV.all? { |n| n =~ /\A\d+\Z/ }
>>    puts "Usage..."
>>    exit
>> else
>>    one, two = ARGV.map { |n| Integer(n) }
>> end
>
> So could we rewrite this as:
>
> begin
>   one, two = ARGV.map{ |n| Integer(n) }
> rescue ArgumentError
>   puts Usage
>   exit
> end

Yeah, that's better.  Neither of our versions checks the number of  
arguments though and we probably should...

James Edward Gray II