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263. Ugly Number
Write a program to check whether a given number is an ugly number. Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. Example ...
分类:其他好文   时间:2019-03-16 09:42:45    阅读次数:146
java.sql.ResultSet.next() 光标常见错误总结分析
java.sql.ResultSet.next() Moves the cursor forward one row from its current position. A ResultSet cursor is initially positioned before the first row; ...
分类:数据库   时间:2019-03-13 18:11:35    阅读次数:331
Specify Computed Columns in a Table
https://docs.microsoft.com/en-us/sql/relational-databases/tables/specify-computed-columns-in-a-table?view=sql-server-2017 Before You Begin Limitations ...
分类:其他好文   时间:2019-03-12 12:38:14    阅读次数:139
[Functional Programming] mapReduce over Async operations with first success prediction (fromNode, alt, mapReduce, maybeToAsync)
Let's say we are going to read some files, return the first file which pass the prediction method, this prediction method can be just check whether th ...
分类:其他好文   时间:2019-03-10 09:21:45    阅读次数:142
IOS - 执行时 (经常使用函数)
能够通过NSObject的一些方法获取运行时信息或动态运行一些消息: /*Returns a Boolean value that indicates whether the receiving class is a subclass of, or identical to, a given cla ...
分类:移动开发   时间:2019-03-10 09:17:05    阅读次数:231
[Algorithm] How to use Max Heap to maintain K smallest items
Let's say we are given an array: We want to get K = 3 smallest items from the array and using Max heap data structure. So this is how to think about i ...
分类:其他好文   时间:2019-03-05 23:06:18    阅读次数:188
[LeetCode] 334. Increasing Triplet Subsequence 递增三元子序列
Given an unsorted array return whether an increasing subsequence of length 3 exists or not in the array. Formally the function should: Note: Your algo ...
分类:其他好文   时间:2019-03-02 10:19:57    阅读次数:182
java:提示Could not initialize class sun.awt.X11GraphicsEnvironment
java:提示Could not initialize class sun.awt.X11GraphicsEnvironment 问题: 启动tomcat提示 Could not initialize class sun.awt.X11GraphicsEnvironment 问题。 解决方案: 方案 ...
分类:编程语言   时间:2019-02-27 11:50:00    阅读次数:151
ASP.NET Core + Vue.js 开发
1、新建 项目文件夹 pro,在 VS CODE 打开终端,输入dotnet new mvc 命令,新建asp.net core项目。 2、在Startup.cs添加webpack的引用与配置 3、在根目录下添加webpack.config.js,负责配置webpack如何将vue,js,css,s ...
分类:Web程序   时间:2019-02-25 23:32:15    阅读次数:982
[React] Preventing extra re-rendering with function component by using React.memo and useCallback
Got the idea form this lesson. Not sure whether it is the ncessary, no othere better way to handle it. Have a TodoList component, every time types in ...
分类:其他好文   时间:2019-02-25 18:13:49    阅读次数:122
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