efficiently concatinate

dit8

say I have code looking like:
QByteArray param = "two";
QByteArray newStr = "one";
newStr.append(param).append(" three");

on each append I suppose there is a reallocation taking place. is there a solution taht enables be to have a single alloaction.

reserve seems like uncompurtable option.
I know of QStringBuilder - is there an equivalent for QByteArray?

thanks!

? Offline

Hi! You're lucky because QStringBuilder already supports QByteArray :-)

#include <QStringBuilder>
#include <QDebug>
// ...
QByteArray  say("say");
QByteArray  hello("hello");
QByteArray  world("world");
QByteArray  message =  say % hello % world;
qDebug() << message;

See also String concatenation with QStringBuilder by Olivier Goffart.

dit8

thanks! thats great. I was not aware of that