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|    comp.lang.c++.moderated    |    Moderated discussion of C++ superhackery    |    33,346 messages    |
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|    Message 32,080 of 33,346    |
|    Timothy Madden to All    |
|    ios manipulator to print char/wchar_t as    |
|    01 Apr 12 01:08:21    |
      From: terminatorul@gmail.com              Hello              Shoudn't there be an ios manipulator that prints the next charT       (char/wchar_t/...) as the number ? Similar to the way boolalpha prints       the next bool with a different format.              I have run into this when using a template with an integral argument       (the channel type for color values for image pixels), and much to my       surprize if the type is int I see a number in the console, if it is       unsigned char I see nothing...              Simply casting the value to (int) or other integral type is not enough       since you do not know the signedness of the char type, and you do not       even know the underlaying integral type for the given charT (an       implementation is free to use long long to represent wchar_t ...)              I ended up using        cout << (channel_value + 0)       but in a template I think this is still not generic enough, since it       introduces requirements on the type for channel_value, which are not       there with a simple        cout << channel_value       Also I am not sure of the result type when wchar_t is int or unsigned,       and I have (wchar_value + 0)              Thank you,       Timothy Madden                     --        [ See http://www.gotw.ca/resources/clcm.htm for info about ]        [ comp.lang.c++.moderated. First time posters: Do this! ]              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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