class PlaceStrTextView: UIView,UITextViewDelegate{ var palceStr = "即将输入的信息" //站位文字 var inputStr = "" //输入的信息 //创建一个textView lazy var textView:UITextView = { let tv = UITextView() tv.delegate = self tv.text = self.palceStr tv.textColor
There are n cities connected by m flights. Each fight starts from city u and arrives at v with a price w. Now given all the cities and flights, together with starting city src and the destination dst, your task is to find the cheapest price from src
Given an array of unique integers, each integer is strictly greater than 1. We make a binary tree using these integers and each number may be used for any number of times. Each non-leaf node's value should be equal to the product of the values of it'
之前介绍了<OpenStack Swift All In One安装部署流程与简单使用>,那么接下来就说一说Swift集群部署吧. 1. 简介 本文档详细描述了使用两台PC部署一个小型Swift集群的过程,并给出一些简单的使用实例.本文档假定如下前提条件: 使用Ubuntu操作系统. 每台机器都运行Swift的所有服务,既是Proxy Server,又是Storage Server,用户可以向任何一台机器发起存储服务请求. 采用Swift自带的TempAuth作为用户的身份与权限认证. 所有机
//: Playground - noun: a place where people can play import UIKit // swift中默认情况下, 传入的参数是不可以修改的, 也就是let类型, 也就是常量参数 // 如果想修改这个参数的值, 需要在参数前加"var", 也就是变量参数 func toBinary(var num:Int) -> String // 将一个数转换为二进制 { var result = "" while num !