The Observable created with of and from has a different behavior when use repeatWhen.

[keifergu]

RxJS version: 5.0.0-beta.12

Code to reproduce: https://jsfiddle.net/keifer/gyyv329f/

Expected behavior:

from:1
from:1
from:1
...

Actual behavior:

from:1

Additional information:
When I use the of operator to create an Observable, the behavior is right. But when I do it with from, I think the result is wrong.

[kwonoj]

of and from are different api for handling input - from should supply Array-like object. Due to string is considered as array-like, supplying 1 doesn't raises compilation error but it should be [1] instead to achieve desired behavior.

For example, if you do

Rx.Observable.from('123').map((x) => x + 'x').subscribe(console.log.bind(console));

output will be 1x, 2x, 3x

while

Rx.Observable.of('123').map((x) => x + 'x').subscribe(console.log.bind(console));

will be 123x.

[keifergu]

@kwonoj thanks for your comment,and sorry to reply to you so late.I had created a new fiddle to explain my question.

When we use repeatWhen, the observable that created with Observable.from(<String>) or Observable.from(<Array>) have a different behavior.The <String> observable will only repeat once. But the <array> will repeat at intervals of 2000ms.You can reproduce the problem in that fiddle.

Looking forward to your reply.

[paulpdaniels]

@kwonoj @keifergu might have a point it looks like there is some inconsistent behavior here. The IteratorObservable generates the iterator during construction rather than during subscription (see here). Was there a behavioral reason that this needed to be done?

[kwonoj]

@paulpdaniels check #2497 for those.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.