Golang is one of the fastest programming languages and is widely used in the field of big data. In Golang, numeric type conversion is one of the frequently used operations. This article will introduce how to convert int type to byte type.
In Golang, the int type is an integer type, occupying the range from -2147483648 to 2147483647. The byte type is an unsigned integer type, ranging from 0 to 255.
To convert int type to byte type, you need to use some functions and methods built into Golang. First, you need to convert the int type into a slice of byte type. To do this, we can use the methods provided by the built-in unsafe
and reflect
packages.
The following is a sample code that implements the conversion of int type to byte type:
import ( "bytes" "reflect" "unsafe" ) func intToBytes(n int) []byte { // 获取int类型的值的地址 ptr := reflect.Pointer(&n) // 将int类型转换为[]byte类型的切片 slice := (*[unsafe.Sizeof(n)]byte)(unsafe.Pointer(ptr)) // 将[]byte类型的切片转换为[]byte类型 return bytes.Join([][]byte{slice[:]}, []byte("")) }
In this code, we first use ## in the reflection package reflect
The #Pointer() function obtains the address of the
int type value, and then uses the
unsafe.Pointer() function in the
unsafe package to convert the address A pointer of type
Pointer.
int type value, and finally use the
bytes package of the standard library to connect the byte slices into one Complete byte slice. The final result returned is the converted
byte type value.
func main() { n := 100 bytes := intToBytes(n) fmt.Println(bytes) }
[100 0 0 0 0 0 0 0].
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