#string到intint,err:=strconv.Atoi(string)#string到int64int64, err := strconv.ParseInt(string, 10, 64)#int到stringstring:=strconv.Itoa(int)#int64到stringstring:=strconv.FormatInt(int64,10)

 Float64转int，Int转Unit8

import (	"math"	"fmt")func Uint8FromInt(n int) (uint8, error) {	if 0 <= n && n <= math.MaxUint8 { // conversion is safe		return uint8(n), nil	}	return 0, fmt.Errorf("%d is out of the uint8 range", n)}func IntFromFloat64(x float64) int {	if math.MinInt32 <= x && x <= math.MaxInt32 { // x lies in the integer range		whole, fraction := math.Modf(x)		if fraction >= 0.5 {			whole++		}		return int(whole)	}	panic(fmt.Sprintf("%g is out of the int32 range", x))}