+=??

[chrisCPO]

sorry guys easy question here what is this +=, what does this do and what is its name in programming so i find what the other ones like it do *= /= -= ...

[Master Kenth]

+= increments variables by the given number. Say you have a variable X that is 4,

X = 4
X += 2
X is now 6.

The other ones are just different math operators, i.e.

*= is multiplication
/= is division
-= is subtraction

[Crusha K. Rool]

X += Y and the others are just a shorter form of writing
X = X + Y

If you only need to increment by 1 each time, you can use X++ as opposed to X = X + 1.


In C are those shortcuts also better for the performance (if the compiler is halfway decent) because it can tell the CPU that it only needs to look up X once and not twice. But I don't know if the UnrealScript compiler/interpreter makes use of such kind of optimization.

[A.M.M.D.]

x+=2 is simply short for x=x+2