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MySQL45道面试题及答案
create database school;use school;#学生表create table `Student`( `Sno` varchar(20) not null COMMENT '人名', `Sname` varchar(20) not null COMMENT '姓名', `Sse ...
分类:数据库   时间:2019-03-23 22:33:20    阅读次数:202
[Javascript] Avoiding Mutations in JavaScript with Immutable Data Structures
To demonstrate the difference between mutability and immutability, imagine taking a drink from a glass of water. If our glass is mutable, when we take ...
分类:编程语言   时间:2019-03-23 22:13:01    阅读次数:114
Hangfire源码解析-如何实现可扩展IOC的?
一、 "官方描述" These projects simplify the integration between Hangfire and your favorite IoC Container. They provide custom implementation of JobActivator ...
分类:其他好文   时间:2019-03-18 19:51:12    阅读次数:144
编辑距离算法-DP问题
Levenshtein Distance The Levenshtein distance is a string metric for measuring the difference between two sequences. Informally, the Levenshtein dista ...
分类:编程语言   时间:2019-03-18 13:35:17    阅读次数:167
Python连接MySQL数据库之pymysql模块使用
前言:python 3.x版本连接数据库,使用的是mysql库,而python 2.x 版本是用的mysqldb库 1、安装数据库:pip install pymysql 2、连接数据库,执行单条sql写法一: 运行的结果: 3、执行单条aql,写法二 运行结果 ...
分类:数据库   时间:2019-03-18 11:43:31    阅读次数:276
MSc Data Mining and Machine Learning (2019)
MSc Data Mining and Machine Learning (2019)Lab 4 – Neural NetworksProblemThe challenge is to implement the Error Back-Propagation (EBP) training algor ...
分类:系统相关   时间:2019-03-17 20:10:04    阅读次数:140
COMP9321/19T1/resources/22490
Resources / Assignments (/COMP9321/19T1/resources/22490)/ Assignment 2 (/COMP9321/19T1/resources/24962)/ Data Service for World Bank Economic Indicato ...
分类:其他好文   时间:2019-03-17 19:57:37    阅读次数:78
Relationship between hashCode and equals method in Java
转自stackoverflow: Q: I read in many places saying while override equals method in Java, should override hashCodemethod too, otherwise it is "violating ...
分类:编程语言   时间:2019-03-17 13:59:44    阅读次数:102
Errata for C# 6.0 in a Nutshell
Version Location Description PDF Page 15-16 list of reserved keywords and list of contextual keywords The keyword 'in' appears in both the reserved ke ...
分类:Windows程序   时间:2019-03-15 23:04:42    阅读次数:184
关于SQL的一些知识
1.什么是SQL? Structured Query Language:结构化查询语言 其实就是定义了操作所有关系型数据库的规则。每一种数据库操作的方式存在不一样的地方,称为“方言”。 2.SQL通用语法 1. SQL 语句可以单行或多行书写,以分号结尾。 2. 可使用空格和缩进来增强语句的可读性。 ...
分类:数据库   时间:2019-03-15 20:45:38    阅读次数:221
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