如何将go的类型从uint8转换为unit32？
只需代码：
只需代码：
package main
import (
"fmt"
)
func main() {
uInt8 := []uint8{0,1,2,3}
var uInt32 uint32
uInt32 = uint32(uInt8)
fmt.Printf("%v to %v\n",uInt8,uInt32)
}
〜> 6g test.go&& 6l -o test test.6&& ./测试
test.go:10：无法将uInt8(类型[] uint8)转换为uint32类型
package main
import (
"encoding/binary"
"fmt"
)
func main() {
u8 := []uint8{0,3}
u32LE := binary.LittleEndian.Uint32(u8)
fmt.Println("little-endian:",u8,"to",u32LE)
u32BE := binary.BigEndian.Uint32(u8)
fmt.Println("big-endian: ",u32BE)
}
输出：
little-endian: [0 1 2 3] to 50462976 big-endian: [0 1 2 3] to 66051
Go binary package功能实现为一系列转换.
func (littleEndian) Uint32(b []byte) uint32 {
return uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
}
func (bigEndian) Uint32(b []byte) uint32 {
return uint32(b[3]) | uint32(b[2])<<8 | uint32(b[1])<<16 | uint32(b[0])<<24
}