inefficient QString coding practice

Eva Brucherseifer eva at
Sat Mar 13 15:51:28 GMT 2004

On Saturday 13 March 2004 14:38, Thiago Macieira wrote:
> Dr. Juergen Pfennig wrote:
> >If we look into QT's source code, we find that QT would handle
> >
> >  if( extension == ".wav")
> >    ...
> >
> >much more efficient, because it has an overloaded == operator for
> > "const char*". Here is the source from qstring.cpp:
> Only if QT_NO_CAST_ASCII isn't given. If it is given, then all the
> implicit const char* to QString conversions are withheld.

Ther is no implicit cast involved. You have a member function available for 
exactly the parameters given. So no cast here and there shouldn't be any 
problem with the QT_NO_CAST_ASCII flag at all.

The questions is rather: Is this member function available in all supported Qt 
versions? If so it should be no problem to change all code to use the compare 


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