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Version: 2.7.x

基本使用

package main

import (
"github.com/gogf/gf/v2/frame/g"
"fmt"
)

func main() {
var v g.Var

v.Set("123")

fmt.Println(v.Val())

// 基本类型转换
fmt.Println(v.Int())
fmt.Println(v.Uint())
fmt.Println(v.Float64())

// slice转换
fmt.Println(v.Ints())
fmt.Println(v.Floats())
fmt.Println(v.Strings())
}

执行后,输出结果为:

123
123
123
123
[123]
[123]
[123]

JSON 序列化/反序列

gvar.Var 容器实现了标准库 json 数据格式的序列化/反序列化接口。

  1. Marshal
    package main

import (
"encoding/json"
"fmt"
"github.com/gogf/gf/v2/frame/g"
)

func main() {
type Student struct {
Id *g.Var
Name *g.Var
Scores *g.Var
}
s := Student{
Id: g.NewVar(1),
Name: g.NewVar("john"),
Scores: g.NewVar([]int{100, 99, 98}),
}
b, _ := json.Marshal(s)
fmt.Println(string(b))
}

执行后,输出结果:

    {"Id":1,"Name":"john","Scores":[100,99,98]}
  1. Unmarshal
    package main

import (
"encoding/json"
"fmt"
"github.com/gogf/gf/v2/frame/g"
)

func main() {
b := []byte(`{"Id":1,"Name":"john","Scores":[100,99,98]}`)
type Student struct {
Id *g.Var
Name *g.Var
Scores *g.Var
}
s := Student{}
json.Unmarshal(b, &s)
fmt.Println(s)
}

执行后,输出结果:

    {1 john [100,99,98]}