From: "David A. Black" <dblack@...>
Date: 2007-10-26T03:50:21+09:00
Subject: Re: Change a string to an integer, report an error if the string does not represent an integer?

Hi --

On Fri, 26 Oct 2007, 7stud -- wrote:

> Ugh.  This is much faster:
>
> strings = ['0013abc', '0025', '-0030', '+051', '00-1', '-abc72']
>
> strings.each do |str|
>  if str.match(/^(\-|\+)?\d+$/)
>    puts str.to_i
>  else
>    puts "invalid int"
>  end
> end

Although....

   strings = ["0025\nhello"] #   will print 25

You want \A and \z, rather than ^ and $.


David

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