vba 股票交易接口_golang fmtStringer 接口的使用

age:10,high:178,name:NewManage:10,high:178,name:NewManage:10,high:178,name:NewMan

vba 股票交易接口,stringer接口定义如下：

此时的输出并不是我们想要的，所以这个用法不可行。

age:10,high:178,name:NewManage:10,high:178,name:NewManage:10,high:178,name:NewMan

##example2

package main

import (
        'fmt'
)


type Power struct{
        age int
        high int
        name vba 股票交易接口,string
}
//非指针
func (this Power) String() string {
        return fmt.Sprintf('age:%d, high:%d, name:%s', this.age, this.high, this.name)
}


func main() {
        var i Power = Power{age: 10, high: 178, name: 'NewMan'} //非指针变量

        fmt.Printf('%s
', i)
        fmt.Println(i)
        fmt.Printf('%v', i)
}

golang fmtStringer 接口的使用

##example1

package main

import (
        'fmt'
)


type Power struct{
        age int
        high int
        name string
}

//指针类型
func (this *Power) String() string {
        return fmt.Sprintf('age:%d, high:%d, name:%s', this.age, this.high, this.name)
}


func main() {
        var i *Power = &Power{age: 10, high: 178, name: 'NewMan'}  //指针类型


        fmt.Printf('%s
', i)
        fmt.Println(i)
        fmt.Printf('%v', i)
}

##example3

package main

import (
        'fmt'
)

type Power struct{
        age int
        high int
        name string
}
//非指针类型
func (this Power) String() string {
        return fmt.Sprintf('age:%d, high:%d, name:%s', this.age, this.high, this.name)
}


func main() {
        var i *Power = &Power{age: 10, high: 178, name: 'NewMan'}//指针类型

        fmt.Printf('%s
', i)
        fmt.Println(i)
        fmt.Printf('%v', i)
}

下面通过一些例子加以说明。

##example4

package main

import (
        'fmt'
)


type Power struct{
        age int
        high int
        name string
}

//指针类型
func (this *Power) String() string {
        return fmt.Sprintf('age:%d, high:%d, name:%s', this.age, this.high, this.name)
}


func main() {

        var i Power = Power{age: 10, high: 178, name: 'NewMan'} //非指针

        fmt.Printf('%s
', i)
        fmt.Println(i)
        fmt.Printf('%v', i)
}

文章为作者独立观点，不代表股票交易接口观点