2
的F#遍历名单上有五种不同的类型:不同类型
type Name = string
type PhoneNumber = int
type Sex = string
type YearOfBirth = int
type Interests = string list
type Client = Name * PhoneNumber * Sex * YearOfBirth * Interests
代表的客户端。然后让我们说我有三个这样的客户:
let client1 = "Jon", 37514986, "Male", 1980, ["Cars"; "Sexdolls"; "Airplanes"]
let client2 = "Jonna", 31852654, "Female", 1990, ["Makeup"; "Sewing"; "Netflix"]
let client3 = "Jenna", 33658912, "Female", 1970, ["Robe Swinging"; "Llamas"; "Music"]
let clients = [client1; client2; client3]
我怎么会去通过clients
一定元素搜索?说,我有一种方法,我想要得到与我一样性别的客户的姓名?我已经写了下面的函数,至少可以确定输入性是否相同,但是不会明显地削减它。
let rec sexCheck sex cs =
match cs with
| [] -> []
| c::cs -> if sex = c then sex else sexCheck sex cs
sexCheck "Male" clients
任何提示?