How to get only latest value from subscribe in angular 4

Question

How to get only latest value from subscribe in angular 4?

this.AbcSrvice.value.subscribe(data => {console.log(data)})

You should probably check out this: https://stackoverflow.com/questions/37089977/how-to-get-current-value-of-rxjs-subject-or-observable — Maximilian Riegler, Sep 20 '18 at 14:15
I am subscriblng a boolean BehaviorSubject, so i want only latest value or last value from observable — Shivaji Watekar, Sep 20 '18 at 14:50

score 2 · Answer 1 · answered Sep 20 '18 at 14:14

2

import { last } 'rxjs/operators';


this.AbcSrvice.value
.pipe(last())
.subscribe(data => {console.log(data)});

answered Sep 20 '18 at 14:14

David

its not useless, its impossible to answer the question without knowing more information – mast3rd3mon Sep 20 '18 at 14:23
why? he just wants the "latest value" emitted, who cares what the value is – danday74 Sep 20 '18 at 14:25
for all we know, the OP wants the latest entry in an array, or they could want the updated value, in both cases, you dont need the `.pipe()` – mast3rd3mon Sep 20 '18 at 14:28
@mast3rd3mon if it was the latest entry in an array, I'm hoping that the OP would not need post a question on SO... and this would not be related to `subscribe` either. However, I can understand that the question might seem unclear; and maybe I did not understand what OP meant either... just have to wait for them – David Sep 20 '18 at 14:49
Above code is not working for me – Shivaji Watekar Sep 20 '18 at 14:50
@ShivajiWatekar: `not working` meaning ...? – David Sep 20 '18 at 14:51
@David I am subscriblng a boolean BehaviorSubject, so i want only latest value or last value from observable – Shivaji Watekar Sep 20 '18 at 14:52
@ShivajiWatekar And what do you get using `last`? – David Sep 20 '18 at 15:10

1 Answers1