can I count on my compiler to optimize strlen on const char *?

Question

In my SAX xml parsing callback (XCode 4, LLVM), I am doing a lot of calls to this type of code:

static const char* kFoo = \"Bar\";

void SaxCallBack(char* sa         


        

Answer 1

Follow-up question:

Have you tested the following ?

static std::string const kFoo = "BAR";

void SaxCallBack(char* sax_string,.....)
{
  if ( sax_string == kFoo)
  {

  }


}

It's a net win in readability, but I have no idea about the performance cost.

As an alternative, if you must dispatch by yourself, I have found that using a state-machine like approach (with stack) is much better readability-wise, and might also win performance-wise (instead of having a large number of tags to switch on you only have the tags that can be met right now).