Good day, c++ guys.

I have a question about char_traits of user defined "char" type. I
need a string type, which supports "long" as its "char" type, so I
defined a lstring like this:

typedef basic_string<long> lstring;

but I did not define template <> char_traits<long> {...};
It seems following code works:

lstring aLongString;
int aLongString.length();

I do not quite understand the roll of char_traits, can anyone to
clearify?

Thanks.

On 12ÔÂ28ÈÕ, ÏÂÎç3ʱ24·Ö, "multics.cn" <multics...@gmail.com> wrote:
> Good day, c++ guys.
>
> I have a question about char_traits of user defined "char" type. I
> need a string type, which supports "long" as its "char" type, so I
> defined a lstring like this:
>
> typedef basic_string<long> lstring;
>
> but I did not define template <> char_traits<long> {...};
> It seems following code works:
>
> lstring aLongString;
> int aLongString.length();
>
> I do not quite understand the roll of char_traits, can anyone to
> clearify?
>
> Thanks.

what? I am a new user fot this ,SO just try ,