Compare the syntax and functions of golang and go

Go and Golang are the same programming language, but Golang is another name for the Go language. Go is an open source programming language developed by Google. It has the characteristics of static typing, compilation, concurrent programming and garbage collection. It also provides a rich standard library and tool chain. In this article, we will compare the syntax and features of the Go language and provide specific code examples.

1. Variable definition and function declaration

In the Go language, variable definition uses the keyword var, and function declaration uses the keyword func. Here is an example:

// 变量定义
var count int = 10

// 函数声明
func Add(a, b int) int {
    return a + b
}

In comparison, Golang's syntax is similar to Go, but with slight differences. For example, Golang uses colon = for assignment when defining variables, and you can use := for a simplified form of variable declaration and assignment. Function declarations can also be written using func and return values, but the result must be returned using the return keyword.

// 变量定义
count := 10

// 函数声明
func Add(a, b int) int {
    return a + b
}

2. Loops and conditional statements

The loop statements in Go language include for loop and range loop, and the conditional statements include if and switch. Here is an example:

// for循环
for i := 0; i < 10; i++ {
    fmt.Println(i)
}

// range循环
numbers := []int{1, 2, 3, 4, 5}
for index, value := range numbers {
    fmt.Println(index, value)
}

// if条件语句
if num > 0 {
    fmt.Println("Num is positive")
} else {
    fmt.Println("Num is negative")
}

// switch条件语句
switch num {
case 1:
    fmt.Println("One")
case 2:
    fmt.Println("Two")
default:
    fmt.Println("Other")
}

Loops and conditional statements in Golang are similar to Go, but colon = is used for variable declaration and assignment in the for loop, and the break keyword is omitted in the switch statement.

3. Concurrent programming

An important feature of the Go language is that it supports concurrent programming. It provides keywords go and channel to achieve concurrency. Here is an example:

// 创建并发执行的goroutine
go func() {
    fmt.Println("Hello, World!")
}()

// 创建一个channel
ch := make(chan int)

// 在goroutine中将结果发送到channel
go func() {
    ch <- 10
}()

// 从channel中接收结果
result := <-ch
fmt.Println(result)

Golang has similar concurrent programming capabilities to Go, but uses different keywords. Golang uses the keywords goroutine and channel to achieve concurrency.

Summary:

The syntax and functions of Go and Golang are very similar, with only some minor differences. The syntax of the two is very similar in terms of variable definitions, function declarations, loops, and conditional statements. But when it comes to concurrent programming, Golang uses different keywords. Regardless of whether they choose to use Go or Golang, developers can enjoy the same functionality and performance.

The above is the detailed content of Compare the syntax and functions of golang and go. For more information, please follow other related articles on the PHP Chinese website!