For example I have multiple `ids : [1,2,3,4,5]` and then for each id I want to call delete api endpoint.Normally I would have to call it 5 times with forEach function :

```
ids.forEach(item => {
this.myService.delete(item).subscribe.....

}) 

```

But what if I want to combine it to one observable, so I could know when the loop has ended (complete state in rxjs) ?

Can I do something like this ?