SWIFT3.0 Common operations include delete string (string), replace string, insert string

1. Delete the string at the specified location,

Let str = "ABCDEFG"

Let STR3 = str.substring (From:str.index (Str.endindex, Offsetby:-4))

Print (STR3) output DEFG

Let STR4 = str.substring (To:str.index (Str.startindex, Offsetby:4))

Print (STR4) output ABCD

2. Inserting a string

var str = "ABCDEFG"

Str.insert (contentsof: "* * * *". Characters, At:str.index (Str.startindex, Offsetby:3))

Print (str) output ABC****DEFG

3. Replacing strings

var str = "ABCDEFG"

Let str2 = Str.replacingoccurrences (of: "AB", With: "")

Print (str2) output CDEFG

This article is from the "common Methods of swift3" blog, so be sure to keep this source http://13210199.blog.51cto.com/13200199/1955754

SWIFT3.0 Common operations include delete string (string), replace string, insert string