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 }
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