「算」 01. 类型转换

类型转换的问题。

int

• int → int64: i := int64(int)

• int → uint64: ui := uint64(int)

• int → float: f := float64(int)

• int → string: str := strconv.Itoa(int)

• int64 → string: str := strconv.FormatInt(int64, 10)

uint

• uint64 → string: str := strconv.FormatUint(uint64, 10)

float

• float → int: i := int(float)

• float → string: str := strconv.FormatFloat(float64, 'E', -1, 64)

string

• string → int: i, err := strconv.Atoi(string)

• string →float: f, err := strconv.ParseFloat(string, 64)

• string → bool: b, err := strconv.ParseBool("true")

• string → []byte: b := []byte(string)

byte

[]byte → string: str := string([]byte)

bool

• bool → string: string := strconv.FormatBool(true)

interface

• interface→int: interface.(int64)

• interface→string: interface.(string)

• interface→float: interface.(float64)

• interface→bool: interface.(bool)

查看类型

import(
	"fmt"
	"reflect"
)
 
func main() {
 	a := 1
 	fmt.Println("a type by reflect: ", reflect.TypeOf(a))
}