Hi Jos,
i think Garret have swap the optimization:
CLEAR
tt = SECONDS()
xString = REPLICATE("a",100000)
? "direct fill",SECONDS()-tt
xString = ""
tt = SECONDS()
FOR i=1 TO 100000
xString = m.xString +"a"
NEXT
? "compiler see string = string + ...., then enlarge the heap",SECONDS()-tt
xString = ""
tt = SECONDS()
FOR i=1 TO 100000
xString = "" + m.xString +"a"
NEXT
? "compiler copy the string",SECONDS()-tt
xString = ""
tt = SECONDS()
FOR i=1 TO 100000
STORE m.xString +"a" TO xString
NEXT
? "compiler use a intermediate ?? optimization ",SECONDS()-ttFabio
