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创业第一年 太特么累了 - 资讯 - 清泛网 - 专注C/C++及内核技术
...帐，而是当作重点工作记下来，立马制定措施，坚决杜绝一个坑里摔两回。
创业刚开始时，团队人少，感情就是管理，不要多想什么制度、规定，浪费时间。但人多以后，再谈感情你自己背不过来，别人也觉得你假(虚伪)，适...
MQTT物联网协议完全实践指南 · App Inventor 2 中文网
...室控制系统
项目概述
实现一个基于MQTT的智能温室控制系统，包含：
温湿度传感器数据采集
自动灌溉控制
远程监控和手动控制
数据记录和报警功能
系统架构设计
graph TB
...
TLSF源码及算法介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...杂度 O(1)，在内存碎片问题上表现良好，可以将它看做是一个动态管理内存的内存池，提供分配及回收内存的方法，并能够进行内存碎片化整理。它的特点在于：
可以预期的分配执行时间，无论对于多达的内存分配请求，TLSF...
Difference between one-to-many and many-to-one relationship
What is the real difference between one-to-many and many-to-one relationship? It is only reversed, kind of?
10 Answers
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How to implement one-to-one, one-to-many and many-to-many relationships while designing tables?
Can anyone explain how to implement one-to-one, one-to-many and many-to-many relationships while designing tables with some examples?
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JavaScript: replace last occurrence of text in a string
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I know this is silly, but I'm feeling creative this morning:
'one two, one three, one four, one'
.split(' ') // array: ["one", "two,", "one", "three,", "one", "four,", "one"]
.reverse() // array: ["one", "four,", "one", "three,", "one", "two,", "one"]
.join(' ') // string: "one four, on...
Difference Between One-to-Many, Many-to-One and Many-to-Many?
...o how concepts like uni-directional and bi-directional mappings affect the one-to-many/many-to-many relationships. I'm using Hibernate right now so any explanation that's ORM related will be helpful.
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Regex for password must contain at least eight characters, at least one number and both lower and up
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Minimum eight characters, at least one letter and one number:
"^(?=.*[A-Za-z])(?=.*\d)[A-Za-z\d]{8,}$"
Minimum eight characters, at least one letter, one number and one special character:
"^(?=.*[A-Za-z])(?=.*\d)(?=.*[@$!%*#?&])[A-Za-z\d@$!%*#?&]{8...
MySQL: multiple tables or one table with many columns?
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Any time information is one-to-one (each user has one name and password), then it's probably better to have it one table, since it reduces the number of joins the database will need to do to retrieve results. I think some databases have a limit on t...
const char* concatenation
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In your example one and two are char pointers, pointing to char constants. You cannot change the char constants pointed to by these pointers. So anything like:
strcat(one,two); // append string two to string one.
will not work. Instead yo...