Comments (4)
@ChrisPenner observed on Twitter that this is basically https://www.learnrxjs.io/learn-rxjs/operators/combination/combinelatest from RxJS. Fun!
from reactive-banana.
Opinion: on balance I think I am in favor of including cool types like this in reactive-banana
proper, rather than a companion library. While it's nice to have a minimal core, coming up with things like Step
and Tidings
on one's own is far from easy, and if they help users solve real problems in standardized ways, I think we ought to promote them.
As a counterpoint, though, look how sprawling the reflex
API is: https://hackage.haskell.org/package/reflex. Part of what I think draws people to reactive-banana
is its simplicity.
The challenge of course is to decide where to draw the line, and indeed the line may be at "no additional types beyond Event
and Behavior
". But if we decide to start adding more syntactic sugar like Step
, then I think we just need to find the right place in the module hierarchy, and ideally come up with a compelling, real-world example to include in the documentation.
from reactive-banana.
I'm afraid the Step
name is not informative enough. I couldn't get a clue on what is it about until I've read the whole snippet.
It hints about stepper
usage, but not the way it is used and what to expect 🤔
Perhaps Latest
would be an improvement?
onDone <- combineLatest do
beforePick <- latest aoiBeforePick.onImageAcquired
...
I like the idea though. Looks handy for implementing various drag-n-drops (:
from reactive-banana.
Another option for types like this and Tidings
is to live in a blessed companion package like reactive-banana-extras
or reactive-banana-contrib
, which has a less-minimal core, but is still full of high-quality stuff, with an API that we make sure doesn't get weird and unwieldly.
from reactive-banana.
Related Issues (20)
- Successful evaluation for an undefined network HOT 5
- `reactive-banana` can't be compiled on GHC 9.2 HOT 2
- I created a Matrix channel HOT 8
- Add `MonadMoment` instances for all monad transformers in `transformers` HOT 1
- Release 1.3.0.0 HOT 3
- Join Stackage HOT 4
- `Behavior` constantly re-evaluating when caching is expected HOT 4
- Unexpected memory growth HOT 6
- Event handler not seeing early events. HOT 12
- `Behavior`s can hold onto more memory than they need to HOT 2
- Memory leak with dynamic behavior switching HOT 16
- Gloss GUI events not responding HOT 5
- Idea: add a combinator to track when a behavior is a different value HOT 14
- Call `unregister` for garbage collected events made by `AddHandler`. HOT 9
- Discrepancy in model and implementation HOT 15
- Optimize representation of Latch HOT 1
- Not compatible with these-1.2 (disallowed) HOT 2
- Simultaneous events can have undefined behavior within execute HOT 2
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from reactive-banana.