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MagicArray:像php一样，让Go业务代码不再卷！ - 阿旭^_^

 8 months ago
source link: https://www.cnblogs.com/a-xu/p/17929336.html
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MagicArray:像php一样，让Go业务代码不再卷！

卷！一个字形容了当今码农行业的现状。一层一层的代码结构，一个一个dto，entity,vo,req,resp。这些对象越来越多，让码农们非常劳于奔命，加一个字段，改一个字段，影响面有多少。代码量也越来越大。有可能一个代码，要建10多个数据对象。这虽然有点夸张，但体现了行业的乱象。

我是曾经写php代码的研发，由于php的并发能力的不足，和编译检错能力不足，导致行业用php越来越少了。但是不得不说，在php的时代，跟本不需要这么多对象，因为有一个强大的array，包罗万象。难道我们go、java都不能也通过这种方式实现吗？

389174-20231226235052441-573262491.png

Allright,  由此，MagicArray就诞生了，不用关心类型，不用关心空指针，不用创建哪么多数据对象，轻松数据转换。废话不多说，上代码：

DTO替代方式：

package main

import (
    "encoding/json"
    "fmt"
    arr "github.com/lingdor/magicarray"
    "time"
)

type UserDTO struct {
    Id   int `json:"userid"`
    Name string
}

type ScoreDTO struct {
    Score     int
    ScoreTime time.Time
}

type AreaDto struct {
    CityId int
    City   string
}

func dtosCommand() {

    user := UserDTO{
        Id:   1,
        Name: "bobby",
    }
    score := ScoreDTO{
        Score:     66,
        ScoreTime: time.Now(),
    }
    area := AreaDto{
        CityId: 10000,
        City:   "beij",
    }

    mix, _ := arr.Merge(arr.ValueofStruct(user), score, area)
    mix = arr.Pick(mix, "Id", "City", "Score")
    if bs, err := json.Marshal(mix); err == nil {
        fmt.Println(string(bs))
    } else {
        panic(err)
    }

}
{"userid":1,"City":"newyork","Score":66}
package main

import (
    "encoding/json"
    "fmt"
    arr "github.com/lingdor/magicarray"
)

type ColumnUserEntity struct {
    Id       int `json:"uid"`
    UserName string
    IsMale   bool
}

func columnCommand() {

    users := []ColumnUserEntity{
        {
            Id:       1,
            UserName: "Bobby",
            IsMale:   true,
        },
        {
            Id:       2,
            UserName: "Lily",
            IsMale:   false,
        },
    }

    usersArr := arr.ValueOfSlice(users)
    usersArr = arr.WashColumn(usersArr, arr.WashTagRuleJsonInitialLower())
    if bs, err := json.Marshal(usersArr); err == nil {
        fmt.Println(string(bs))
    } else {
        panic(err)
    }

    usersArr = arr.Column(usersArr, "UserName")
    if bs, err := json.Marshal(usersArr); err == nil {
        fmt.Println(string(bs))
    } else {
        panic(err)
    }

}
["Bobby","Lily"]

tag操作

package main

import (
    "encoding/json"
    "fmt"
    arr "github.com/lingdor/magicarray"
)

type UserEntity struct {
    Id       int `json:"uid"`
    UserName string
    IsMale   bool
}

func tagCommand() {

    users := UserEntity{
        Id:       1,
        UserName: "Bobby",
        IsMale:   true,
    }

    userArr := arr.ValueofStruct(users)
    userArr = arr.SetTag(userArr, "Id", "json", "UserId")
    if bs, err := json.Marshal(userArr); err == nil {
        fmt.Println(string(bs))
    } else {
        panic(err)
    }

}
[
   {"uid":1,"userName":"Bobby","isMale":true},
   {"uid":2,"userName":"Lily","isMale":false}
]

参考：https://lingdor.medium.com/magicarray-use-to-data-translate-easily-8831b937bfc1


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