Explain the conversion method of byte type in Golang

Golang language is a relatively young programming language, and its emergence has greatly facilitated our development work. In our daily work, we often encounter situations where we need to convert the byte type into other types. This article will explain in detail the conversion method of byte type in Golang and related knowledge points.

1. The byte type in Golang

In Golang, the byte type is an unsigned integer type, and its value range is 0 to 255. The byte type is usually used when processing binary data, such as reading files, network communications, etc.

2. Convert byte to int type

When converting byte type to int type in Golang, you can use the built-in function int(). The specific method is as follows:

var a byte = 12
var b int = int(a)

The above code converts the byte type variable a into the int type variable b by using the int() function.

3. Converting byte to string type

Converting byte type to string type is very common in Golang. It is usually used in scenarios such as network communication or reading and writing files.

bytes := []byte{'g', 'o', 'l', 'a', 'n', 'g'}
str := string(bytes)

In the above code, we convert the byte type slice bytes into a string type variable str.

4. Convert string to byte type

Converting string type to byte type is also very common in Golang. You can use the []byte() function.

str := "hello world"
bytes := []byte(str)

The above code converts the string type variable str into a byte type slice bytes by using the []byte() function.

It should be noted that if the Chinese characters are directly converted into byte type, the conversion cannot be correct. In this case, the []rune() function needs to be used to split the Chinese characters.

str := "Golang 编程"
bytes := []byte(string([]rune(str)))

The above code uses the []rune() function to split the Chinese characters in the string, and uses the string() function to convert it into string type, and finally use the []byte() function to convert it into a slice of byte type bytes.

5. Convert byte to rune type

Converting byte type to rune type is also common in Golang. Here, we need to use the rune() function.

var a byte = 97
var r rune = rune(a)

The above code converts the byte type variable a into the rune type variable r by using the rune() function.

6. Convert byte to float64 type

To convert byte type to float64 type in Golang, you can also use the built-in function float64().

var a byte = 127
var f float64 = float64(a)

The above code converts the byte type variable a into the float64 type variable f by using the float64() function.

Summary

This article introduces the conversion method of byte type in Golang, including byte to int, byte to string, string to byte, byte to rune and byte to float64 operations. These operations are often used in our daily work, and they can bring great convenience to our development work.

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