Ben Five learning iOS: Using Swift to get pinyin initials, support to take one sentence in each word pinyin first letter

In a recent project, encountered the problem of getting pinyin initials, looked up the method on the Internet, did not find the right to use, so he studied a bit, wrote the following methods, welcome to exchange, I hope to help you.

  pyfirst.swift//  get pinyin initials, support to take a sentence in each word pinyin first//  Created by Zhou Honey ([email protected]) on 2015/6/1 (Children's Day).//  Copyright (c) 2015 www.miw.cn. All Rights Reserved.//import Foundationfunc Pyfirst (string:string, _ Allfirst:bool=false)->String{    var py= "#"    if let S = string {        if s = = "" {            return py        }        var str = cfstringcreatemutablecopy (nil, 0, s)        CFSt Ringtransform (str, nil, Kcfstringtransformtolatin, Boolean (0))        cfstringtransform (str, nil, Kcfstringtransformstripcombiningmarks, Boolean (0))        py = ""        if Allfirst {for            x in (str as String). Componentsseparatedbystring ("") {                py + = Pyfirst (x)            }        } else {            py  = (str as nsstring). Substringtoindex (1). Uppercasestring        }    }    return py}/*//Call example, return #var s:string? Pyfirst (s) s = "People's Republic of China @hi wor\r\nld." Call example, return Zhrmghgwpyfirst (s,true)//Call example, return Zpyfirst (s) */

This may be the best present on children's Day.

Ben Five learning iOS: Using Swift to get pinyin initials, support to take one sentence in each word pinyin first letter