golang类型转换组件Cast的使用详解

cast.ToInt(8)     // 8
cast.ToInt(8.31)    // 8
cast.ToInt("8")    // 8
cast.ToInt(true)    // 1
cast.ToInt(false)    // 0

var eight interface{} = 8
cast.ToInt(eight)    // 8
cast.ToInt(nil)    // 0

package main

import (
	"fmt"
	"reflect"

	"github.com/spf13/cast"
)

func main() {
	var foo interface{} = "one more time"
	box := cast.ToString(foo)
	fmt.Println(box)
	box = cast.ToString("3.12021")
	fmt.Println(box)

	cvIntBox := cast.ToInt(8)
	fmt.Println(cvIntBox, reflect.TypeOf(cvIntBox))
	cvFloatBox := cast.ToFloat32(8.31)
	fmt.Println(cvFloatBox, reflect.TypeOf(cvFloatBox))
	cvBoolBox := cast.ToBool(true)
	fmt.Println(cvBoolBox, reflect.TypeOf(cvBoolBox))
}