map
CancellableTaskResult.map
Namespace: FsToolkit.ErrorHandling
Function Signature:
('a -> 'b) -> CancellableTask<Result<'a, 'c>> -> CancellableTask<Result<'b, 'c>>
Examples
Note: Many use-cases requiring map
operations can also be solved using the cancellableTaskResult
computation expression.
Example 1
As a continuation of Result.map3 Example 2, let's assume that we want to store the created post in the database using the function
savePost : CreatePostRequest -> CancellableTask<Result<PostId, exn>>
We can save the post and return its inner using CancellableTaskResult.map
:
let rawPostId : CancellableTask<Result<Guid, exn>> =
savePost createPostRequest
|> CancellableTaskResult.map (fun (PostId postId) -> postId)
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