subtract if true, add if false?

[blank01]

Maybe it's just too early for me but I can't think of a way to simplify the following:

if(goLeft) {
this.x -= speed;
} else {
this.x += speed;
}

So far the best I can think of is:

this.x += (2*speed)*(int(goLeft)-.5)

It saves a few lines sure but I'm not sure if it will take less/more computer effort.

[raikado]

there's no reason to do that. The first method is ok.

[zyxstand]

also, you only need { and } if you want multiple lines of code. otherwise you can just do this:
if (goLeft) this.x -= speed else this.x += speed;
now it's also one line :P

[raikado]

Also, another method would be this:

this.x += goLeft ? -speed : speed