c++ - Does Qt5 have any class for similar to StringBuilder or StringBuffer? -

surprisingly, qt5 has deprecated stringbuilder class present in previous versions. other option use qtextstream, not convenient since have pass in buffer writes (e.g. qfile, qstring).

c++ (std::stringstream), c# (stringbuilder) , java (stringbuffer) have these classes. how qt?

qstringbuilder not deprecated. qt docs:

in 4.6, internal template class qstringbuilder has been added along few helper functions. class marked internal , not appear in documentation, because aren't meant instantiate in code. use automatic, described below. class found in src/corelib/tools/qstringbuilder.cpp if want have @ it.

their code sample:

#include <qstringbuilder>  qstring hello("hello"); qstringref el(&hello, 2, 3); qlatin1string world("world"); qstring message =  hello % el % world % qchar('!'); 

and can use c++ need std::stringstream.