如何从Objective-C代码中删除一次性使用的类变量？

I'm writing some Objective-C code and I've frequently hit the situation where I have to use a class variable to store a value for one time use. After consuming it I no longer need it. To me, storing this value in a class variable seems like code smell. Really the value should be passed in as a parameter to the methods I'm using.I'm writing some Objective-C code and I've freq