Comments (3)
This builder is more convenient to use because it supports arbitrary awaitables including Task
, Task<'a>
, YieldAwaitable
, ValueTask
, etc. without requiring wrapper functions. This builder's license is also extremely permissive which makes it easy to drop into a project as if you'd written it yourself. I also believe it to be well tested, particularly around exception handling (which can be a little tricky). However, the main reason to use this builder is that it produces state-machine based tasks which are more like what you get from C#. The FSharpx builder is based on Task.ContinueWith
which causes problems with long-running loops. See this issue I opened in June, which has not yet been addressed.
I think the FSharpx builder exists as a "nice-to-have" feature in the FSharpx toolbox, and works adequately for writing some glue code here and there for Tasks. I do not think it is suitable for heavy use, where a huge portion of your code is in task
blocks because your system is asynchronous from the bottom-up and you have chosen Task<>
as your canonical representation of async work (instead of F#'s Async<>
type).
See also this issue from last year. To be fair, it was fixed quickly after being reported, but it appears to have existed for years before being caught. Trivial use
binding scenarios exhibited this problem (e.g. open a stream and call ReadAsync
on it).
My point here is not to denigrate the FSharpx project. It's simply that the task builder in that project is a tiny part of the whole thing, and doesn't seem to have gotten much real world exercise. By contrast, the entire point of this project is its task builder and so it really tries to get that one little thing right. My TaskBuilder is not very well known, so I can't claim that it has yet been "battle tested" either, although I do use it in my work and in my other open source projects Rezoom and Rezoom.SQL. It is also in use in Giraffe.
from taskbuilder.fs.
Agree, you've done cool thing.
What do you think about integrating into https://github.com/kekyo/FSharp.Control.FusionTasks ?
from taskbuilder.fs.
Don't think I'll pursue that; although that project is of course welcome to borrow any of this public domain code if they wish to.
from taskbuilder.fs.
Related Issues (20)
- Please elaborate a bit on "Tail calls are not optimized" HOT 2
- Async overload bind HOT 8
- Issue with plain Task and do! HOT 1
- TaskBuilder update breaks my tasks HOT 30
- TaskResultBuilder ? HOT 3
- TaskBuilder 2 release HOT 5
- Could not load type 'BindI' from assembly 'TaskBuilder.fs HOT 3
- Caching bool tasks HOT 2
- add support of specifying TaskScheduler HOT 4
- The type 'Threading.Tasks.Task' is not compatible with the type 'Threading.Tasks.Task<'a>' HOT 7
- Using ValueTask instead of Task HOT 1
- Intended way to call async and ignore result HOT 2
- Possible incorporation into FSHarp.Core HOT 9
- Easy way to get result synchronously? HOT 5
- Support for netstandard2.0 HOT 11
- Code is not sufficiently generic
- Question on ContextInsensitive tasks HOT 41
- Non-generic Tasks HOT 6
- Dispose is not called in task CE HOT 3
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from taskbuilder.fs.