zoukankan      html  css  js  c++  java
  • Day11 swift2.0-String

    //                                      **Day 11

    //                                      **swift 2.0  String

     

    var arr = [1,"2",3.3]

    print("(arr)")

     

    var dict = ["a":1,"b":2,"c":3]

    (dict as NSDictionary).allKeys

    (dict as NSDictionary).allValues

     

    var string = "hello world!"

    let range = string.startIndex..<string.startIndex.advancedBy(5)

     

    string.replaceRange(range, with: "Hi")

     

    string

     

    print("(string)")

     

    let range2 = string.endIndex.advancedBy(-6)..<string.endIndex

     

    string.substringWithRange(range2)

     

     

    var animals = "u{1F60E}hoho~"

    animals.characters.count

     

    var swift_string = "symbol2.0"

    let string2 = swift_string + "ahaha~"

    print("(string2)")

     

    swift_string

     

    swift_string.appendContentsOf("addString")

     

    print("(swift_string)")

     

    var i = 1

    for  ; i <= 100 ;  {

        i*i

        i += 1

    }

     

    for var a = -6.28 ; a <= 6.28 ; a += 0.2 {

        sin(a)

        

        cos(a)

        

        tan(a)

        

        1/tan(a)

    }

     

    var newstring = "hello world!"

    for var c in newstring.characters {

        print("(c)")

        

        if c == "r" {

            c = " "

            print("(newstring.endIndex)")

        }

        print("(c)")

    }

     

    print("(newstring)")

  • 相关阅读:
    Spring_IOC理论推导
    第一个Mybatis及运行问题分析
    Spring_简介
    ECharts_雷达图
    ECharts_饼图
    ECharts_直角坐标系的常用配置
    ECharts_散点图
    ECharts_折线图
    util之日期工具类
    util之Json工具类
  • 原文地址:https://www.cnblogs.com/tony0571/p/5406207.html
Copyright © 2011-2022 走看看