Can I suggest this implementation which, thanks to your ideas, brings some speed-up, sometimes important ? It has to be used exactly like 'concat()' or 'fastcat()' that were suggested here. It has some specialised templates for char and fixed-size char arrays, which occur often in string concatenations, and have the advantage that their size is known at compile-time. -- DSL Komplett von GMX +++ Superg�nstig und stressfrei einsteigen! AKTION "Kein Einrichtungspreis" nutzen: http://www.gmx.net/de/go/dsl