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Golang基礎(chǔ)如何進行Golang語言開發(fā)
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Golang(又稱Go)是一種靜態(tài)類型、編譯型、并發(fā)型編程語言，由Google開發(fā)，它的設(shè)計目標是實現(xiàn)簡潔、高效、安全的編程語言，本文將介紹Golang的基礎(chǔ)知識和如何進行Golang語言開發(fā)。
安裝與配置
1、下載并安裝Golang
訪問Golang官網(wǎng)(https://golang.org/dl/)下載對應(yīng)操作系統(tǒng)的安裝包，解壓后即可使用。
2、配置環(huán)境變量
將Golang的bin目錄添加到系統(tǒng)的PATH環(huán)境變量中，例如在Windows系統(tǒng)中，可以將C:Program FilesGobin添加到PATH中；在Linux或macOS系統(tǒng)中，可以將$GOROOT/bin添加到PATH中。
基本語法
1、變量與常量
var a int = 10 const b int = 20
2、數(shù)據(jù)類型
Golang有以下幾種基本數(shù)據(jù)類型：
bool:布爾值，true或false
int:整數(shù)，32位帶符號整數(shù)
uint:無符號整數(shù)，32位無符號整數(shù)
float32:32位浮點數(shù)
float64:64位浮點數(shù)
complex64:復數(shù)，實部和虛部各占32位
complex128:復數(shù)，實部和虛部各占64位
string:字符串
[]byte:字節(jié)切片
struct:結(jié)構(gòu)體
map:映射表
channel:通道(信道)
func:函數(shù)(匿名函數(shù))
interface{}:接口類型(空接口)
3、控制結(jié)構(gòu)
if condition {
// do something
} else if another_condition {
// do something else
} else {
// do default thing
}
for i := start; i <= end; i++ {
// do something with i
}
for i := start; i <= end; i++ {
// do something else with i
} else {
// do default thing with i
} select {
case value1 := <-ch1: // receive from ch1 and store it in value1 (blocking) or do nothing (non-blocking) and fallthrough to the next case clause without executing any code inside the switch block if no value is received on ch1 within the timeout period (default case) or execute some code (e.g. close ch1) if a value is received on ch1 before the timeout period expires (case clause for a received value) or execute some code (e.g. close ch1) if an error occurs while receiving from ch1 (case clause for an error) or execute some code (e.g. close ch1) if an unexpected event occurs (case clause for an unexpected event). default: // execute some code if none of the above cases are executed (fallthrough is not allowed in this switch statement) if condition1 && condition2 && condition3 { // check multiple conditions simultaneously return result if condition1 is true and condition2 and condition3 are also true else return result if at least one of condition2 and condition3 is true else return result if condition1 is false and all of condition2 and condition3 are false else return result (do nothing and fall through to the next statement) goroutines: // create and start a new goroutine using the go keyword var x, y int = 7, 8 func add(x int, y int) in{ return x + y } func main() { go add(x, y); // start a new goroutine that calls add function with values of x and y println("x + y =", add(x, y)) time.Sleep(time.Second) // wait for a second before continuing execution of main function println("After one second") // continue execution of main function after waiting for one second} package main import "fmt" func main() { var name string = "John Doe" var age int = 30 printf("My name is %s and I am %d years old
", name, age)
文章名稱：Golang基礎(chǔ)如何進行Golang語言開發(fā)
文章起源：http://www.5511xx.com/article/dpjdeoe.html
