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DATE 2011-07-01

HANGOUT

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Key: archive Value: 2011-07-01

Key: id Value: 540638

MESSAGE
DATE 2011-07-07
FROM Ruben Safir
SUBJECT Subject: [NYLXS - HANGOUT] (fwd) Re: iostream manipulator construction and design
From owner-hangout-outgoing-at-mrbrklyn.com Thu Jul 7 02:07:11 2011
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From: Ruben Safir
To: hangout-at-nylxs.com
Subject: [NYLXS - HANGOUT] (fwd) Re: iostream manipulator construction and design
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-- forwarded message --
Path: reader1.panix.com!panix!not-for-mail
From: Ruben Safir
Newsgroups: comp.lang.c++
Subject: Re: iostream manipulator construction and design
Date: Thu, 7 Jul 2011 02:51:43 +0000 (UTC)
Organization: PANIX Public Access Internet and UNIX, NYC
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Xref: panix comp.lang.c++:1087358

On Wed, 06 Jul 2011 19:13:22 +0200, Alf P. Steinbach /Usenet wrote:


> std::ostream& operator<<(
> std::ostream& stream,
> MyWidthManip const& m
> )
> {
> stream.setw( m.w_ ); // I'm just assuming there is a setw.
> Dunno. return stream;
> }
>
> And that's it.
>
> For a manipulator without arguments you don't need a supporting class,
> because the manipulator can just be a function that << operator then
> calls.

what is wrong with

std::ostream& operator<<(std::ostread& os, flags (*f)(int a)) {
os.setf(f(a));
}

flags setw(x){
return std::ios_base:setw(x);
}
-- end of forwarded message --

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