Bike-shedding: switchMapFirst and switchMap

[benlesh]

At the very least, we need to change switchMapFirst to switchFirstMap to match our naming scheme.

But switchFirst doesn't really seem to name what it's doing.

Basically it takes the first Observable it gets and merges it, dropping all subsequent Observables it gets until the first one is complete, then it takes another one.

Ideas I've had so far:

1. tailDrop or dropTail - https://en.wikipedia.org/wiki/Tail_drop
2. pick - because it picks the first and drops the rest until the first is done.
3. chooseFirst - same as pick, really, but it chooses the first and drops the rest.

[benlesh]

My initial thought is pick. I don't like choose right off, because it sounds like there should be some sort of predicate to decide whether or not to merge the incoming observable. Also, pick is pretty terse.

The downside is I'm not sure pick describes anything much better than switchFirst, but at least it doesn't have the confusion of having "switch" in there.

[benlesh]

NOTE: I'd like to get decisions on this very quickly, as I don't want to break the API after beta release, if we can avoid it.

[jeffbcross]

My gut says chooseFirst.

[jayphelps]

exhaust or drain.

[benlesh]

it's so focused on whatever observable it has that it ignores all incoming observables until that one observable completes. Then it drops it like it never existed at all and focuses on the very next observable it sees. It's obsessed with whatever observable it gets, so much so that the world around it fades away. Even if the observable it has never emits a value, it'll sit there, staring at it... waiting... watching... But if that observable it gets blasts data at it, it takes it all. It's greedy and patient. It's focused. It doesn't care about just the "first" observable it gets... it cares that it has one, any one, to call it's own, until the observable's death do they part... then it moves on, it wants another.

[jayphelps]

scumbagObservable()

[benlesh]

At the very least, we need to change switchMapFirst to switchFirstMap to match our naming scheme.

This minimum thing has been done with #921

[staltz]

I liked exhaust that @jayphelps suggested. Another option is stick as in "stick with this fella until he ends". Other options: loyal, steadfast, stay.

I don't like pick alone because it has the same problem as choose: both sound like they expect a predicate. To get the "picks the first and drops the rest until the first is done" connotation you'd need an additional word, like pickFirst. Same problem as chooseFirst.

[trxcllnt]

@staltz: I liked exhaust that @jayphelps suggested. Another option is stick as in "stick with this fella until he ends". Other options: loyal, steadfast, stay.

brungYa as in, "dance with the one that brung ya."

[benlesh]

LOL

[lock]

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