Computation Expression

AsyncOption Computation Expression

Namespace: FsToolkit.ErrorHandling

Examples:

Example 1

Given a personId and an age, find a person and update their age.

tryParseInt : string -> int option
tryFindPersonById : int -> Async<Person option>
updatePerson : Person -> Async<unit>

// Async<unit option>
let addResult = asyncOption {
  let! personId = tryParseInt "3001"
  let! age = tryParseInt "35"
  let! person = tryFindPersonById personId "US-OH"
  let person = { person with Age = age }
  do! updatePerson person
}