Question

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Can you have "ByRef" arguments in AS3 functions?

Primitive types in AS3 pass by value instead of reference. Is there a way to override that behavior and pass by reference for certain variables? Take the following code:

for (var i=0; i<4; i++) {
    for (var j=0; j<4; j++) {
        if(i==0 && j==0){
            switch(currentRotation){

            case 0:
                var1 = j; //I want var 1 to be a reference to j, not the value of j
                    break;

            }
        }
        if(someArray[var1][var2]){
            //stuff
        }
    }
}

If this isn’t possible, I guess I’ll just have to copy and paste the code a few times. :/

Thanks

Answer 1

You may cheat a bit. Wrap j into some object:

var obj = {j: 0};
for (var i=0; i<4; i++) {
    while (obj.j < 4) {
        if(i==0 && obj.j==0){
            switch(currentRotation){

            case 0:
                //...
                    break;

            }
        }
        if(someArray[var1][var2]){
            //stuff
        }
        obj.j++;
    }
}