Contents

module Grains

open System.Numerics

let square (n:int) = 
    if n <= 0 || n > 64 then 
        Error "Invalid input"
    else
        Ok (2I ** (n - 1) |> uint64)

let total = 
    [1..64] 
    |> List.map square
    |> List.reduce (fun x y -> match x, y with Ok a, Ok b -> Ok (a + b) | _ -> Error "Invalid input")

Version data entries

132 entries across 132 versions & 1 rubygems

Version	Path
trackler-2.2.1.58	tracks/fsharp/exercises/grains/Example.fs
trackler-2.2.1.57	tracks/fsharp/exercises/grains/Example.fs
trackler-2.2.1.56	tracks/fsharp/exercises/grains/Example.fs
trackler-2.2.1.55	tracks/fsharp/exercises/grains/Example.fs
trackler-2.2.1.54	tracks/fsharp/exercises/grains/Example.fs
trackler-2.2.1.53	tracks/fsharp/exercises/grains/Example.fs
trackler-2.2.1.52	tracks/fsharp/exercises/grains/Example.fs
trackler-2.2.1.51	tracks/fsharp/exercises/grains/Example.fs
trackler-2.2.1.50	tracks/fsharp/exercises/grains/Example.fs
trackler-2.2.1.49	tracks/fsharp/exercises/grains/Example.fs
trackler-2.2.1.48	tracks/fsharp/exercises/grains/Example.fs
trackler-2.2.1.47	tracks/fsharp/exercises/grains/Example.fs