[RFC] Shorthand for computed with getter/setter pattern

[maxdeviant]

A pattern that I find myself using quite often is something like this:

class Todo {
  @observable private _name = '';

  @computed
  get name() {
    return this._name;
  }

  set name(value) {
    this._name = value;
  }
}

Now, this is a lot of boilerplate for something that could be as simple as:

class Todo {
  // Open to suggestions for what we would call this :)
  @autoComputed name = '';
}

I find that this pattern is useful when working with domain objects (in strict mode), since I can tweak the properties anywhere without needing to introduce an action everytime I wish to do so.

@mweststrate What are your thoughts on adding something like this? Or have I invented a solution for a problem that I created myself (like perhaps using strict mode where it isn't actually useful/needed)? 😄

[urugator]

Discussed in #839, also check https://github.com/farwayer/mobx-decorators#setter

[mweststrate]

Closing for duplicate