Re: Is there a STL equivalent of sprintf

From:

Ulrich Eckhardt <eckhardt@satorlaser.com>

Newsgroups:

microsoft.public.vc.stl

Date:

Tue, 24 Mar 2009 09:12:36 +0100

Message-ID:

<l8hm96-008.ln1@satorlaser.homedns.org>

Andre Kaufmann wrote:

Ulrich Eckhardt wrote:

I regularly need to write different Unicode encodings or codepages. I
regularly redirect streams by changing their target streambuffer. I
regularly need to change the output format to the C locale for file IO

But io streams are template based. So writing an integer to a stream
should be a direct function call to a conversion function, which simply
converts the integer to a string and writes it to the stream buffer.

The streambuffer is a plugin, the encoding used to convert characters to
bytes is a plugin (part of the locale) and the function to convert integers
to strings is too (num_put and numpunct facets, both part of the locale).

If all you need is to format a number like it would be written in sourcecode
(i.e. without culture-specific formatting), there really is nothing that
could help you in C++, even sprintf() is locale-aware. Maybe itoa() isn't,
but that doesn't lend itself to good C++ programming.

Uli

--
Sator Laser GmbH
Gesch??ftsf??hrer: Thorsten F??cking, Amtsgericht Hamburg HR B62 932