Re: basic_string::npos

From: Gene Wirchenko (gwirchenkoEXCEPT_at_CAPITALSwencomine.com)
Date: 10/30/03 

Date: Thu, 30 Oct 2003 22:25:14 GMT

On Thu, 30 Oct 2003 21:48:27 GMT, Gene Wirchenko
<gwirchenkoEXCEPT@CAPITALSwencomine.com> wrote:

> In the documentation that is a cruel joke department, we have:
>
> Supposedly string.find() returns basic_string::npos if the search
>string is not found. What is this value? The docs I have state:
>
>"basic_string::max_size
>size_type max_size() const;
>The member function returns the length of the longest sequence that
>the object can control.
>
>basic_string::npos
>static const size_type npos = -1;
>The constant is the largest representable value of type size_type. It
>is assuredly larger than max_size(), hence it serves as either a very
>large value or as a special code."
>
> 1) -1 is assuredly larger than the length of the longest sequence
>that a string can control?

     This is still a puzzle. There is nothing quite like
documentation that assumes you already know the material.

> 2) Despite
> #include <string>
>I am not able to refer to this value anyway.

     Well, I have managed to get this one:
          std::wstring::npos

Sincerely,

Gene Wirchenko

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