DUKERSPACE

Go Lang

Go Lang

Learning

https://gobyexample.com

install package

go get

Update your PATH environment variable

export GOPATH=$HOME/go
export PATH=$PATH:/usr/local/go/bin:$GOPATH/bin
link: https://medium.com/@richardeng/in-the-beginning-61c7e63a3ea6

Go routine

icsendonly := make (<-chan int) //a channel that can only send data - arrow going out is sending
icrecvonly := make (chan<- int) //a channel that can only receive a data - arrow going in is receiving

Pointer

ส่ง &
รับ *

package main

import "fmt"

type human struct {
	name    string
	age     int
	isAdult bool
}

// ใช้ * แทนการ dereference หรือการถอดเอาค่าที่แท้จริงออกมา
func setAdult(h *human) {
	h.isAdult = h.age >= 18
}

func main() {
	somchai := human{name: "Somchai", age: 23}
    // ใช้ & แทนการอ้างถึง reference
	setAdult(&somchai)
	fmt.Println(somchai) // {Somchai 23 true}
}

reference

Private and Public Visibility

private Lowwer case -> func a()
public Upper case => func A()

array, slice

array -> fix list
slice -> not fix

Receiver method

Link