String Pitfalls

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Pitfalls to avoid with CkString.

    CkString *pStr = new CkString;

    pStr->append("This is a test");

    // This returns a const pointer to memory internal to the string
    // object.  Do not use it after the string object has been deleted
    // or manipulated in any way because the pointer may be invalid.
    const char *temp = pStr->getAnsi();

    // "temp" may now point to uninitialized memory, and may cause a crash.
    pStr->clear();

    // This could crash..
    printf("[%s]\n",temp);

    // Re-fetch the pointer.
    temp = pStr->getAnsi();
    // This is now OK:
    printf("[%s]\n",temp);

    // Definitely don't want to use "temp" after this....
    delete pStr;

    // "temp" now points to uninitialized memory, and may cause a crash.
    printf("[%s]\n",temp);