Re: Legacy APIs which output C-style strings: Opportunity to use move semantics?
Kai-Uwe Bux wrote:
Bo Persson wrote:
Kai-Uwe Bux wrote:
null hypothesis wrote:
BTW: Why doesn't basic_string have a ctor analogous to
vector(size_type n)?
It does:
basic_string(size_type n,
charT c,
const Allocator& a = Allocator());
The difference is only that you may not omit the charT parameter
c.
I believe std::vector (and other containers) got this separate
constructor for C++0x, to get away with the CopyConstructible
requirement for its value_type.
Do you mean "do away" instead of "get away"?
Probably. :-) "do away with" or "get away from"?
A C++0x vector should be able to store objects that are only
DefaultConstructible and movable. That introduced a couple of
signatures that std::string doesn't need. Unfortunately it also made
the containers' interfaces different.
Bo Persson
With std::string we don't have that problem, as the char types are
trivially copyable anyway.
Best
Kai-Uwe Bux
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