Talk:C++ string handling

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mem usage?

I just had a young programmer tell me that an uninitialized std::string uses less memory than an initialized one. Is that true? (I guess that would depend on the implementation; but consider, for example gcc) The code I found suspect was:

class blah {
  private:
     std:string name;
  public:
     blah (std:string in) {
        if (!in.empty()) name = in;  // claimed savings of memory
     } 
 };

linas (talk) 03:31, 27 January 2008 (UTC)[reply]

That sounds bogus to me. Even if you don't touch name, it gets initialized at the beginning of the constructor. You can always look at the source, though. —Ben FrantzDale (talk) 06:10, 27 January 2008 (UTC)[reply]

Looking at glibc source is easier said than done. But I did run an experiment with sbrk(0) and the result was no effect. Wonder why he thought that ... linas (talk) 21:07, 27 January 2008 (UTC)[reply]

null characters

just curious if string class accepts null characters. I would assume it does.