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Question: What is a WDL_FastString, i.e. why should/shouldn't one use it instead of a regular WDL_String?
Asked by Tale (77.168.115.x) on November 9 2011, 10:38am
Reply on November 9 2011, 3:37pm:
    If you need to be able to do things like: 
    string.Get()[3]=x;
    Then you must use WDL_String. WDL_FastString makes Get() return const char *, which means all modifications have to be done through its methods. The advantage of this is that it can track the string's length, so a) string.GetLength() is constant-time, and b) appends and many other operations are faster (not needing to calculate the string's length each time).
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