1. 翻转slice
func reverse(s []int) {
for i,j := 0,len(s)-1; i < j; i,j = i+1,j-1 {
s[i],s[j] = s[j],s[i]
}
}
2. []byte间比较大小
package main
import (
"bytes"
)
func main() {
// Interpret Compare's result by comparing it to zero.
var a,b []byte
if bytes.Compare(a,b) < 0 {
// a less b
}
if bytes.Compare(a,b) <= 0 {
// a less or equal b
}
if bytes.Compare(a,b) > 0 {
// a greater b
}
if bytes.Compare(a,b) >= 0 {
// a greater or equal b
}
// Prefer Equal to Compare for equality comparisons.
if bytes.Equal(a,b) {
// a equal b
}
if !bytes.Equal(a,b) {
// a not equal b
}
}
3. []byte <-> string
// string -> []byte
import "encoding/hex"
address := "Guangzhou"
address_byte := []byte(address)
// []byte -> string
address = hex.EncodetoString(address_byte)