f# - 类型 'int' 不支持运算符 '=='

Question

我想像这样计算二项式:

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

但编译器提示

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

我究竟做错了什么？

Answer 1

F# 使用单个 =对于相等运算符:

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