asked on

Do I need to resize wstring if it already has a string but I'm assigning a new string with different size?

The following variables are all wstring. However, those in userDataIter(vector Iterator) points to already has a string them. Would the code below be correct as far as the memory goes for wstring? Thank you.

            if(!(userData->LoginName.empty())&& (LoginNameChanged))
            {
                  userDataIter->LoginName.clear();
                  userDataIter->LoginName = userData->LoginName;
            }

            if(!(userData->shell.empty())&& (shellChanged))
            {
                  userDataIter->shell.clear();
                  userDataIter->shell = userData->shell;

jkr

If you're talking about a 'std::wstring' - no, not at all. The string object itself will take care about that.

ASKER CERTIFIED SOLUTION

rajeev_devin

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jkr

???

You asked whether you need to resiue a string - I answered 'No'. Is that incoorect? No, it isn't... So I cannot quite understand on which basis you are picking your answers.

lapucca

ASKER

Hi jkr,

Your answer is correct and was posted an hour earlier. I should have accept your answer instead. I picked rajeev's answer becuase he also point out the other question I meant to ask, do I need to clear the string firs (_bstr_t requires detach first).

Anyway, you're still correct. I'll pick my answer more carefully next time based on my question. Thank you.