问题
So, a method that alters its object is a mutator. A method that does not alter its object but returns a value (or reference to a value) is a getter. Is there a widely used name for a method that does not alter its object, does not return a value, but potentially alters objects passed to it as arguments. That is, a method that would only every be called for its side-effects on the arguments.
These methods are quite common if you are keen on the Strategy design pattern.
回答1:
I call these methods operations.
They enable the object to be used as an operator. I don't call them operators however, because I program much C++, where operator method has a particular and different meaning.
回答2:
Is there an widely used name for a method that does not alter its object, does not return a value, but potentially alters objects passed to it as arguments.
The lack of replies suggests that, no, there is no widely used name for such a method.
来源：https://stackoverflow.com/questions/7769816/name-for-a-method-that-has-only-side-effects