Index of element in array F#

Question

Good day.

How to find index of the element in array? No word about it in docs. Only way I found is:

let arr = [|1; 4; 5; 10|]
let elem = 5
let i = Array.findIndex (fun e -> e = elem) arr

Answer 1

You can create a shortcut function yourself if you use it frequently:

let findIndex arr elem = arr |> Array.findIndex ((=) elem)
...
let i = findIndex arr elem