sequenceResult

FsToolkit.ErrorHandling

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sequenceResult

Option.sequenceResult
Namespace: FsToolkit.ErrorHandling
Function Signature:
Result<'a,'b> option -> Result<'a option, 'b>
Note that sequence is the same as traverse id. See also Option.traverseResult.
See also Scott Wlaschin's Understanding traverse and sequence.
Examples
Example 1
let r1 : Result<int option, string> =
  Option.sequenceResult (Some (Ok 42))
// Ok (Some 42)
​
let r2 : Result<int option, string> =
  Option.sequenceResult (Some (Error "something went wrong"))
// Error "something went wrong"
​
let r3 : Result<int option, string> =
  Option.sequenceResult None
// Ok None

traverseResult

ResultOption

Last modified 9mo ago

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Outline

Option.sequenceResult

Examples