The type 'int' does not support the operator '=='

Question

I want to calculate binom like this:

let t = seq { 1..10 } |> Seq.takeWhile (fun e -> e % 2 == 0)

but the compiler complain

playground.fsx(27,59): error FS0001: The type 'int' does not support the operator '=='

What am I doing wrong?

Answer 1

F# uses single = for equality operator:

let t = seq { 1..10 } |> Seq.takeWhile (fun e -> e % 2 = 0)