由其他成员组成的Enum(标志)成员 [英] Enum (flags) member composed of other members

问题描述

[<Flags>]
type LikeMatch =
    | None  = 0
    | Start = 1
    | End   = 2
    | All   = Start ||| End //ERROR: Unexpected identifier in union case

我也尝试过用枚举类型对成员进行限定.有没有办法在F#中做到这一点?

I've also tried qualifying the members with the enum type. Is there a way to do this in F#?

推荐答案

根据F#语言参考，无法执行此操作. F#枚举中=符号的右侧必须是整数文字

According to the F# language reference there is no way to do this. The right hand side of the = sign in a F# enum must be an integer literal

• http://msdn.microsoft.com /en-us/library/dd233216(v=VS.100).aspx

语法

type enum-name =
   | value1 = integer-literal1
   | value2 = integer-literal2

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