Golang string (string) and byte array ([]byte) are converted to each other

Golang character string （string） And byte arrays ([]byte) One line of code turns to another

Golang Easy to learn

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One 、 String and byte array ？

The string is Go One of the most commonly used basic data types in the language , It is essentially a read-only character array , Although strings are often seen as a whole , But in fact, the string is a continuous memory space .

Go Another type of byte in language （Byte）. stay ASCII in , An English letter takes up one byte of space , One Chinese character takes up two bytes of space . English punctuation takes up one byte , Chinese punctuation takes up two bytes . One Byte The elements in the array correspond to one ASCII code .

Two 、 Detailed code

1. Byte to string

The code is as follows （ Example ）：

func BytesToString(data []byte) string {
    
	return *(*string)(unsafe.Pointer(&data))
}

2. String to byte array

The code is as follows （ Example ）：

func StringToBytes(data string) []byte {
    
	return *(*[]byte)(unsafe.Pointer(&data))
}

3. Full running test

The code is as follows （ Example ）：

func BytesToString(data []byte) string {
    
	return *(*string)(unsafe.Pointer(&data))
}


func StringToBytes(data string) []byte {
    
	return *(*[]byte)(unsafe.Pointer(&data))
}

func main() {
    
	str := "hello world!"

	fmt.Println(str)

	a := StringToBytes(str)

	fmt.Println(a)

	b := BytesToString(a)

	fmt.Println(b)
}

result （ Example ）：

Successfully translated Hello world!

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summary

There are two ways to remember that byte arrays and strings are interchangeable , Simple and direct , Practical pull full .

I hope this blog will be beneficial to you . I am the light king , I represent myself. .