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PAT Advanced 1107 Social Clusters (30) [并查集]
题目 When register on a social network, you are always asked to specify your hobbies in order to find some potential friends with the same hobbies. A “s ...
分类:其他好文   时间:2020-03-28 23:13:05    阅读次数:76
Saltstack module http 详解
http.query New in version 2015.5.0 Query a resource, and decode the return data Passes through all the parameters described in the :py:func: : .. auto ...
分类:Web程序   时间:2020-03-28 21:38:06    阅读次数:94
Make k Equal from Codeforces Round #629 (Div. 3)
description you are given an array and you are asked to make $k$ elements of it equal after some operations. you can make one of the following operati ...
分类:其他好文   时间:2020-03-28 20:20:02    阅读次数:99
UCF2018 World Cup Fever
The 2018 World Cup was held recently in Russia. Some great soccer countries (e.g., Italy,Netherlands, Chile, USA) did not qualify for this World Cup. ...
分类:其他好文   时间:2020-03-28 10:32:42    阅读次数:82
装饰器
# -*- coding:utf-8 def a_new_decorator(a_func): def wrapTheFunction(): print("I am doing some boring work before executing a_func()") a_func() print(" ...
分类:其他好文   时间:2020-03-27 15:37:54    阅读次数:68
Array 和 Array.prototype
定义 Array 对象是用于构造数组的全局对象,数组是类似于列表的高阶对象。 Array.prototype 属性表示Array构造函数的原型,并允许您向所有Array对象添加新的属性和方法。 获取相应的属性名称 Object.getOwnPropertyNames(Array) //[ "leng ...
分类:其他好文   时间:2020-03-27 12:48:18    阅读次数:61
递归查找 纵向优化
function recursionFn (arr,id) { let onOff = false function recursion (arr,id) { arr.some((item,index)=>{ if (onOff) { return true } if (item.id == id) ...
分类:其他好文   时间:2020-03-26 20:03:32    阅读次数:79
NLog的使用
1、在Nuget上安装NLog 2、新建NLog.config文件 <?xml version="1.0" encoding="utf-8" ?> <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http:/ ...
分类:其他好文   时间:2020-03-26 12:31:07    阅读次数:85
子查询、分页查询
七、子查询/*含义:出现在其他语句中的select语句,称为子查询或内查询 外部的查询语句,称为主查询或外查询 分类: 按照子查询出现的位置: select后面: 仅仅支持标量子查询 from后面: 支持表子查询: 将子查询结果充当一张表,要求必须取别名 where或者having后面:(重点) 标 ...
分类:其他好文   时间:2020-03-25 23:42:43    阅读次数:104
Mysql:FAQ:A.14 Replication
A.14 MySQL 5.7 FAQ: Replication In the following section, we provide answers to questions that are most frequently asked about MySQL Replication. A.14 ...
分类:数据库   时间:2020-03-25 14:54:42    阅读次数:79
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