Re: Testing for Numeric Digits

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From	Miles Bader <miles@gnu.org>
Newsgroups	comp.lang.c++
Subject	Re: Testing for Numeric Digits
Date	Mon, 27 Feb 2012 10:23:08 +0900
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mrc2323@cox.net (Mike Copeland) writes:
>    I know that I could examine the contents of the "wStr" string 
> character-by-character to test if each character is a digit character, 
> but that seems slow and inefficient.  Is there a better way to do such 
> processing?  Thoughts?  TIA

if (wStr.find_first_not_of ("0123456789") == string::npos)
   => All chars are digits

[Most efficient?  I dunno.  But reasonably concise...]

-miles

-- 
Alone, adj. In bad company.

Thread

Testing for Numeric Digits mrc2323@cox.net (Mike Copeland) - 2012-02-26 15:05 -0700
  Re: Testing for Numeric Digits Ian Collins <ian-news@hotmail.com> - 2012-02-27 11:11 +1300
    Re: Testing for Numeric Digits Ian Collins <ian-news@hotmail.com> - 2012-02-27 11:22 +1300
      Re: Testing for Numeric Digits Paul <pchristor@yahoo.co.uk> - 2012-02-26 16:45 -0800
        Re: Testing for Numeric Digits "MikeWhy" <boat042-nospam@yahoo.com> - 2012-02-28 03:17 -0600
          Re: Testing for Numeric Digits Paul <pchristor@yahoo.co.uk> - 2012-02-28 03:30 -0800
          Re: Testing for Numeric Digits Marc <marc.glisse@gmail.com> - 2012-02-28 15:19 +0000
            Re: Testing for Numeric Digits "MikeWhy" <boat042-nospam@yahoo.com> - 2012-02-28 11:04 -0600
          Re: Testing for Numeric Digits Andy Champ <no.way@nospam.invalid> - 2012-02-28 20:44 +0000
  Re: Testing for Numeric Digits Miles Bader <miles@gnu.org> - 2012-02-27 10:23 +0900
  Re: Testing for Numeric Digits scott@slp53.sl.home (Scott Lurndal) - 2012-02-27 17:22 +0000
  Re: Testing for Numeric Digits Dombo <dombo@disposable.invalid> - 2012-02-27 20:29 +0100
  Re: Testing for Numeric Digits Quint Rankid <qbr567@gmail.com> - 2012-02-28 11:43 -0800

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