Could we have doOnAnything operator?

[Thaina]

Suppose there was an ajax call to server that, when it was trigger, it should disable many UI in the page. Normally we could use Do with onNext and onError to enable the page again whenever the result was coming or throwing error. But if there was just the same long line of codes it became 2 duplicate blocks

So I would like to propose this operator to catch all to do something. It would have no input like a Finally but trigger just before next step

Rx.Observable.range(0, 3)
  .do(
    function (x)   {
        // long line of code to enable many places
    },
    function (err) {
        // same long line of code to enable many places as above
    },
);

// instead

Rx.Observable.range(0, 3)
  .doOnAnything(
    function () {
        // same long line of code to enable many places as above
    },
);

Is it possible?

[martinsik]

You can very easily implement this yourself and this probably isn't a very common use-case so it's very unlikely this could become part of RxJS core.