迅速。从名称字符串获取名字和姓氏的首字母

Question

我只是想从名称字符串中获取姓氏的名字和名字的首字母，即，如果名称是“ John Paul Apple”，我希望abbvName是JohnA。

是否有比下面的代码更优雅的方法……我尝试使用reduce却无法正常工作

// get first name & last name initial
let name = "John Paul Apple"
let nameComponents = name.components(separatedBy: " ")
guard let firstname  = nameComponents.first, !firstname.isEmpty else { return }
guard let lastname = nameComponents.last, !lastname.isEmpty else { return }
let startIx = lastname.startIndex
let lastinit = String(lastname.first!)
let abbvName = firstname + lastinit

我尝试了reduce，但是只能按照this的帖子给它起首字母

let initials = "John Fitzgerald Kennedy".components(separatedBy: " ").reduce("") { ($0 == "" ? "" : "\($0.first!)") + "\($1.first!)" }