map2

Namespace: FsToolkit.ErrorHandling

Apply a function to the values of two options if they are Some. If either option is None, return None.

Function Signature

('TInput1 -> 'TInput2 -> 'TOutput) -> 'TInput1 option -> 'TInput2 option -> 'TOutput option

Examples

Example 1

Option.map2 (fun x y -> x + y) (Some 1) (Some 2)

// Some 3

Example 2

Option.map2 (fun x y -> x + y) (Some 1) None

// None

Example 3

Option.map2 (fun x y -> x + y) None (Some 2)

// None