CString -vs- std:string ?

[Paul McKenzie]

f you run the code below, you'll see the peformance difference between CString and std::string.
Run the test in release mode (not debug).
The code below will show that CString out peformance std::string by a factor of MORE then 10 to 1.
Compile in VC++ 6.0 using std::string that comes with VC++.

Do a reserve() on the string before using it. Then you should see hardly any difference.

Almost all of the standard container classes, including std::string, has a reserve() method that addresses the issue that you demonstrated in your code. The ones that don't are the associative types (maps).

In general, what usually ends up in real code is a series of many concatenations on one string. Why not run a benchmark on that, since that is what is more likely to be done in a real application.

Regards,

Paul McKenzie