Go’s language heritage and innovation

Origin and inheritance: Go was born in 2007 and was developed by Google as an alternative to C, drawing on the advantages of Python, Java and C#. Innovative features: Concurrency: Goroutines and Channels enable lightweight concurrent programming. Memory management: The garbage collector automatically manages memory. Interfaces: Improve code extensibility and reusability. Generics (Go 1.18): Write reusable and type-safe code.

Go's language inheritance and innovation

Origin and inheritance

Go language was born in 2007, developed by Google, as a C An alternative. It inherits the powerful features of C, such as static typing, compilation, and high performance, while drawing on the advantages of other languages, such as the simplicity of Python, the concurrency of Java, and the portability of C#.

Innovative features

• Concurrency: The Go language introduces Goroutine and Channel, realizing lightweight concurrent programming and simplifying multi-threaded development.
• Memory management: Go uses a garbage collector to automatically manage memory, freeing programmers from the burden of managing memory.
• Interface: Interface is a key concept in Go, which allows different types to implement the same interface, improving the scalability and reusability of the code.
• Generics: Generics were introduced in Go 1.18, allowing for writing reusable and type-safe code.

Practical case

Goroutine concurrency

package main

import (
    "fmt"
    "time"
)

func main() {
    // 创建一个匿名 Goroutine
    go func() {
        fmt.Println("Hello from Goroutine")
    }()

    // 主线程等待 Goroutine 完成
    time.Sleep(1 * time.Second)
}

Channel communication

package main

import (
    "fmt"
    "time"
)

func main() {
    // 创建一个 Channel
    ch := make(chan string)

    // 创建一个 Goroutine 发送数据
    go func() {
        ch <- "Hello from Goroutine"
        time.Sleep(1 * time.Second)
    }()

    // 主线程从 Channel 接收数据
    fmt.Println(<-ch)
}

Interface and type assertion

package main

import (
    "fmt"
)

type Animal interface {
    Speak() string
}

type Dog struct{}

func (d Dog) Speak() string {
    return "Woof"
}

func main() {
    var animal Animal = Dog{}

    if dog, ok := animal.(Dog); ok {
        fmt.Println(dog.Speak())
    }
}

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