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How to prevent user to login second time when its already logged in.
How to prevent user to login second time when its already logged in. If you are using Forms Authentication, it should already be storing your Authenti ...
分类:其他好文   时间:2020-07-21 09:34:28    阅读次数:78
数据库问题处理
一、表被破坏 1. 问题报错:table is marked as crashed and should be repaired 2. 解析: 某些不可测的问题造成表的损坏(频繁查询和更新)。进而造成无法读取数据。 3. 处理: check table tbname -- 用来检查出现问题的表的状态 ...
分类:数据库   时间:2020-07-20 13:11:02    阅读次数:93
[ML L9] Clustering (K-MEANS)
The k-means algorithm captures the insight that each point in a cluster should be near to the center of that cluster. It works like this: first we cho ...
分类:其他好文   时间:2020-07-17 21:58:52    阅读次数:87
时间选择器组件之关于table走过的弯路
为了提高开发者的研发效率,提升产品品质,我们提供一套基于饿了么UI实现的UI组件库,TMAP-UI 旨在解决的组件地图场景下应用的问题。 最近在新增TMAP-UI组件库的开发过程中,时间选择器是开发者反馈需求较多的一个组件,今天把在开发过程中遇到的一些问题分析给大家。element-ui有原生的时间 ...
分类:其他好文   时间:2020-07-17 13:55:11    阅读次数:91
leetcode148two-sum
Given an array of integers, find two numbers such that they add up to a specific target number. The function twoSum should return indices of the two n ...
分类:其他好文   时间:2020-07-17 13:33:50    阅读次数:46
nodejs 开发之二 npm install 安装依赖包
1. 执行 npm install , C:\Program Files\nodejs\MyBook>npm installnpm notice created a lockfile as package-lock.json. You should commit this file. npm WAR ...
分类:Web程序   时间:2020-07-16 12:27:14    阅读次数:188
react异常 Each child in a list should have a unique “key” prop
react异常警告:Each child in a list should have a unique “key” prop 原因:Dom在渲染数组时,需要一个key,不然嵌套数组时会引起歧义 解决: 1 <div className="classlist-contaier"> 2 {this.st ...
分类:其他好文   时间:2020-07-15 12:46:45    阅读次数:435
35 [假设2] 与现在事实相反的虚拟语气
(1)if 从句是一种虚拟的条件或假设,和现在事实相反的。主从句时态具体如下: 从句: 动词过去式(be 用 were)无论主语是不是单数,都用were 主句:would / could / should / might + 动词原形 所以句型应该是 : ... were... , ...would ...
分类:其他好文   时间:2020-07-14 13:45:40    阅读次数:58
DAY14 - How to run a company
Passage 14 If you want to run a company well, you should remember that there are four general policies to follow with employees. FIrst, pay them what ...
分类:其他好文   时间:2020-07-13 18:02:55    阅读次数:109
练习30--else和if
一 代码及执行结果 ex30.py 1 people = 14 2 cars = 15 3 trucks = 10 4 5 if cars > people: 6 print("We should take the cars.") 7 elif cars < people: 8 print("We ...
分类:其他好文   时间:2020-07-13 13:46:48    阅读次数:67
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