Swift String的操作

字符串的替换

let ReplaceString = "http://www.aimonkey。cn"
let FilterReplace = ReplaceString.replacingOccurrences(of: "。", with: ".")
print(FilterReplace)

字符串的删除

let str = ReplaceString.replacingOccurrences(of: "w", with: "")
print(str)

字符串的截取

// 将ReplaceString 转换为OC 的字符串使用,根据范围来截取字符串
let subString1 = (ReplaceString as NSString).substring(with: NSMakeRange(1, 3))

//截取下标2 之前的字符
let subString2 = (ReplaceString as NSString).substring(to: 2)
print(subString2)

//截取下标2 之后(含有2)
let subString3 = (ReplaceString as NSString).substring(from: 2)
print(subString3)

字符串的分割

let url = "http://blog.csdn.net/hello_hwc?viewmode=list"
let urled = url.components(separatedBy: "/")
print(urled)

字符串的拼接

let str = "Hello"
let newStr = str + "work"
print(newStr)     //Hellowork

let str = String(format: "称呼 ： %@", dic["firstName"]! as! CVarArg)

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