bind - FsToolkit.ErrorHandling

AsyncResultOption.bind
Namespace: FsToolkit.ErrorHandling
Function Signature:
('a -> Async<Result<'b option, 'c>>)
  -> Async<Result<'a option, 'c>>
  -> Async<Result<'b option, 'c>>
Examples
Note: Many use-cases requiring bind can also be solved using the asyncResultOption computation expression.
Example 1
Given the following functions:
getUserById : UserId -> Async<Result<User option, exn>>
getPostById : PostId -> Async<Result<Post option, exn>>
We can get a post's user given a PostId like this:
// Async<Result<Post option, exn>>
getPostById postId
|> AsyncResultOption.bind (fun post -> getUserById post.UserId)

apply

ignore

Last modified 9mo ago

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Outline

AsyncResultOption.bind

Examples