F#类型不匹配

我正在将一个程序从Haskell转换为F#。无法访问.Net中的Haskell库

这个声明有什么问题

type Product = string


type Shopping = Product list

let p_tea = "Tea"
let p_sugar = "Sugar"
let p_coffee = "Coffee"
let p_biscuit = "Biscuit"
let p_milk = "Milk"
let p_soya = "Soya"

let shopping = [p_tea,p_sugar,p_coffee,p_biscuit,p_milk]

我得到以下错误。。类似的声明在Haskell中也适用

Type mismatch. Expecting a
    Shopping    
but given a
    (string * string * string * string * string) list    

在F#列表（和数组）中，项目用分号分隔。元组由逗号分隔

type Product = string

type Shopping = Product list

let p_tea = "Tea"
let p_sugar = "Sugar"
let p_coffee = "Coffee"
let p_biscuit = "Biscuit"
let p_milk = "Milk"
let p_soya = "Soya"

let shopping = [p_tea; p_sugar; p_coffee; p_biscuit; p_milk]

F#使用逗号分隔元组中的元素，使用分号分隔集合中的元素。你想要：

let shopping = [p_tea; p_sugar; p_coffee; p_biscuit; p_milk]

---

这看起来像一个元组列表。可能你想用；作为分隔符。旁注，更惯用的F应该是

type Product=|字符串的乘积

。类型别名相对不常见。