Operators
TaskResult Infix Operators
Namespace: FsToolkit.ErrorHandling.Operator.TaskResult
FsToolkit.ErrorHandling provides the standard infix operators for the map
(<!>
), apply
(<*>
), and bind
(>>=
) functions of the Task<Result<_,_>>
type.
Examples:
Example 1
Expanding on the TaskResult.map2 example, we define another function:
notifyFollowers : NotifyNewPostRequest -> Task<Result<unit, exn>>
We can then rewrite the example and additionally call notifyFollowers
using the operators as below:
open FsToolkit.ErrorHandling.Operator.TaskResult
// CreatePostRequest -> Task<Result<unit, exn>>
let createPostAndNotifyFollowers (req : CreatePostRequest) =
notifyNewPostRequest
<!> (getFollowerIds req.UserId)
<*> (createPost req)
>>= notifyFollowers
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