15 Qualities Every Software Engineer Should Have
About Startup a Company
Docker Basic Commands and Issue
Docker basic commands and issue
Nodejs Module
我们编写了一个hello.js文件,这个hello.js文件就是一个模块,模块的名字就是文件名(去掉.js后缀),所以hello.js文件就是名为hello的模块。
Introduce of Html5 Websocket
认识HTML5的WebSocket
Nodejs Authentacation Methods
Web has some Authentication Methods : HTTP Basic authentication, tokens, signatures and one-time passwords.
Nodejs’ authentacation is same.
Setup Linux Working Environment
Linux working environment setup: redmine, gitbucket, tomcat
One Man's View of the World
李光耀观天下读书笔记
One Man’s View of the World
Clean Code Note
Clean Code 读书笔记
Linux File Properties
ls -l
command show files properties. Let’s descrip what these properties mean.
Js Iterable
遍历Array可以采用下标循环,遍历Map和Set就无法使用下标。为了统一集合类型,ES6标准引入了新的iterable类型,Array、Map和Set都属于iterable类型。
Linux UID and GID
虽然我们登陆 Linux 主机的时候,输入的是我们的账号,但是其实 Linux 主机并不会直接认识你的『账号名称』的,他仅认识 ID 。 由于计算机仅认识 0 与 1,所以主机对于数字比较有概念的;至于账号只是为了让人们容易记忆而已。 而你的 ID 与账号的对应就在 /etc/passwd
当中哩。
Scala Map Cache Method
- getOrElseUpdate特别适合用于访问用作缓存的映射(Map)。假设调用函数f开销巨大:
Linux Chmod Command
synax: chmod options permissions filename
Useful Linux Commands
Linux Useful Commands
Django First
Django memo and note.
Linux Run Level
- 0 - Halt the system.
- 1 - Single-user mode (for special administration).
- 2 - Local Multiuser with Networking but without network service (like NFS)
- 3 - Full Multiuser with Networking
- 4 - Not Used
- 5 - Full Multiuser with Networking and X Windows(GUI)
- 6 - Reboot.