Rxdart: Synchronously get current value of BehaviorSubject

Created on 17 Mar 2018 · 6Comments · Source: ReactiveX/rxdart

With RxJS I can use .value to synchronously get the current value of the BehaviorSubject. How can I do this with rxdart?

Source

smkhalsa

Most helpful comment

You should be able to mimic this for now:

/// in an async method
var subject = new BehaviorSubject<String>();
subject.add('test');
var currentValue = await subject.first;

This should work, because getting the stream on a BehaviorSubject returns a deferred Stream, to which the current value is immediately added.

frankpepermans on 18 Mar 2018

👍3

All 6 comments

Hey there! We currently don't support this, but it's easy to add. I'll do it up!

brianegan on 17 Mar 2018

That would be awesome! Thanks

smkhalsa on 17 Mar 2018

@brianegan, any update on this? Is there anything I can do to help? This is currently a blocker for me.

smkhalsa on 18 Mar 2018

You should be able to mimic this for now:

/// in an async method
var subject = new BehaviorSubject<String>();
subject.add('test');
var currentValue = await subject.first;

This should work, because getting the stream on a BehaviorSubject returns a deferred Stream, to which the current value is immediately added.

frankpepermans on 18 Mar 2018

👍3

@brianegan I was looking for an hour right now for this attribute until I came across this issue and realized that the getter is hidden in intellisense because of same name of getter and setter. Not sure how to change that without changing the name, but I thought I should mention that here.