Topic: push_back and basic_string
Author: kanze@gabi-soft.de
Date: 2000/01/16 Raw View
Fausto Fabbioni <fabbioni@freelance.it> writes:
|> Bjarne Stroustrup wrote:
|> > Ahn Ki-yung <kyagrd@chiak.kaist.ac.kr> writes:
|> > > Is push_back, and pop_back member of basic_string ?
|> > push_back() is, pop_back() isn't.
|> > > In The C++ Programming Language 3rd Edition,
|> > > Chapter 6 (p115) and Chapter 20 (p), there is an example
|> > > using push_back member of the string type variable.
|> > > Is this Standard ?
|> > Yes. I don't describe proprietary extensions. Unless explicitly stated,
|> > if 'it' is in "The C++ Programming Language (3rd Edition)" then 'it' is
|> > in the standard. (See http://www.research.att.com/~bs/3rd_issues.html
|> > for open issues).
|> Sorry. But I don't understand why push_back is and pop_back ins't.
Simply because we (the French delegation) didn't think of it. Neither
was originally in the standard; push_back was added in one of the last
meetings, because the French comments on the CD2 mentioned that it was
missing.
I'm not sure that pop_back would have been accepted, even if we had
mentioned it. The basic justification for push_back was that the exact
functionality was already there, in the form of append; it was just
oversight not providing the STL compatible name. Off hand, I don't see
what std::string function pop_back would map to.
--
James Kanze mailto:James.Kanze@gabi-soft.de
Conseils en informatique orient e objet/
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Author: Niklas Mellin <nimel@my-deja.com>
Date: 2000/01/17 Raw View
In article <867lh9u5x9.fsf@gabi-soft.de>,
kanze@gabi-soft.de wrote:
[...]
>
> I'm not sure that pop_back would have been accepted, even if we
> had mentioned it. The basic justification for push_back was
> that the exact functionality was already there, in the form of
> append; it was just oversight not providing the STL compatible
> name. Off hand, I don't see what std::string function pop_back
> would map to.
Perhaps:
str.erase(--str.end());
or
str.resize(--str.size());
/Niklas Mellin
Sent via Deja.com http://www.deja.com/
Before you buy.
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Author: Fausto Fabbioni <fabbioni@freelance.it>
Date: 2000/01/11 Raw View
Bjarne Stroustrup wrote:
> Ahn Ki-yung <kyagrd@chiak.kaist.ac.kr> writes:
>
> > Is push_back, and pop_back member of basic_string ?
>
> push_back() is, pop_back() isn't.
>
> > In The C++ Programming Language 3rd Edition,
> > Chapter 6 (p115) and Chapter 20 (p), there is an example
> > using push_back member of the string type variable.
> >
> > Is this Standard ?
>
> Yes. I don't describe proprietary extensions. Unless explicitly stated,
> if 'it' is in "The C++ Programming Language (3rd Edition)" then 'it' is
> in the standard. (See http://www.research.att.com/~bs/3rd_issues.html
> for open issues).
Sorry. But I don't understand why push_back is and pop_back ins't.
In the standard document on String Library chapter the push_back
is point out only on declaration of class, but it isn't described
on modifiers paragraph 21.3.5 why.
It seems a mistake.
I believe that pop_back can be more helpful as push_back.
Sorry for my bad english.
Fausto Fabbioni
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