map3

Namespace: FsToolkit.ErrorHandling
Function Signature:
('a -> 'b -> 'c -> 'd)
  -> Result<'a option, 'e>
  -> Result<'b option, 'e>
  -> Result<'c option, 'e>
  -> Result<'d option, 'e>
Example 1
Given the following function:
add : int -> int -> int -> int
Then using ResultOption.map3, we can do the following:
ResultOption.map3 add (Ok (Some 30)) (Ok (Some 10)) (Ok (Some 2)) 
// Ok (Some 42)
map2
apply
Last updated 10 months ago