golang 50 Shades of Go: Traps, Gotchas, and Common Mistakes for New Golang Devs
effective go
The Go Programming Language Specification
fmt 1. what is fmt fmt is a tool that automaically format source code
2. do what? The gofmt program (also available as go fmt, which operates at the package level rather than source file level) reads a Go program and emits the source in a standard style of indentation and vertical alignme
string what is a read-only slice of bytes; a strings can hold arbitrary byte sequence, even they are not always valid UFT-8 byte sequence for: const sample = "\xbd\xb2\x3d\xbc\x20\xe2\x8c\x98" will print mess; ��=� ⌘
A string literal, absent byte-level escapes, always holds valid UTF-8 sequences.
java use uft-16
internal implement 1 2 3 4 type StringHeader struct { Data uintptr Len int } back quote vs double quote back quote: will not escape characters
program basic What is the difference between a composite data type and a data structure? Data Types and Data Structures
variables a container(memory address) hold a value;
a variable have a specific type
what is a data type? 具有相同属性的一类数据；
primitive; 基本 compositive:类型 composed of primitive types.
编程范例 Programming paradigm
Introduction of Programming Paradigms
Differences between Procedural and Object Oriented Programming
什么是编程范例 sytle: 编程语言解决问题或者执行任务的方式; 一门编程语言可能有多个范例；
常见的编程范例 imperative vs declarative imperative: 声明一系列方法(控制流程)获取想要的结果 (how to do) Decalrative: 声明获取结果的函数，没有中间的流程函数(what to do) object oriented vs procedural object oriented procedural 程序被拆分为一系列对象 程序被拆分为一系列方法 将 function 和 data放在对象里 使用function 操作 data object oriented function data from function to function to get a retult
段落感: 不同的阻力, 阻力大->阻力小 无段落感: 一致的阻力
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io 什么是I/O 计算机与外界(I/O设备)发生数据交换的过程；
reference System Call in OS: Types and Examples
I/O Models
Unix network programming charpter 6 - I/O Multiplexing
I/O类型 方向:
输入: 键盘，鼠标 输出：打印机，显示器 输入&&输出:网卡 设备类型:
存储 网络 输出: 显示器，声卡…. IO 的过程 accepet operate
basic database design clean architecture tesatable micro 监控 rpc way to 30 the question in develop the responsiblity th