Go Learning Notes (2)

This is a creation in Article, where the information may have evolved or changed.

• Go language
  • Interface
  • Concurrent
    • Channel
    • Buffered Channels

Go language

Interface

A combination of a group of method

typeinterface {   SayHi()   string)}var i Meni = mike

• As long as the struct that implements all the functions in interface can be assigned to I;
• The function of the abstract base class in C + + can be realized by taking interface as the parameter of functions.
• Value, OK = element. (T) upcasting;
• Reflection T: = Reflect. Typeof (i)

Concurrent

Goroutine: Smaller-grained units than threads

go hello(a, b, c)

• The Go keyword launches a goroutine
• Goexit (defer function is still called)
• Gosched (Give up CPU time)

Channel

Communication of Goroutine

make(chanint)ch <- v   # 把 v 发给 chv := <- ch  # 从 ch 收信

• The assignment and reading values of the default ch are blocked;

Buffered Channels

CH: = Make (chan bool, 4)
* So the first four elements, do not block; The first element begins to block;
* range can be used to foreach Channel
* Close can show closed channel no longer receives message;
* Select (Linux-like Select);
* Select monitors multiple channels simultaneously;

copyright notice: This article for Bo Master original article, without Bo Master permission not reproduced.