map 和 struct golang 的合并

Question

我有 2 个项目，collections 和 accounts 由 2 个结构表示，我想将它们合并到一个响应中。

collections, accounts, err := h.Service.Many(ctx, params)

集合结构定义如下：

type Collection struct {
    ID          int64      `json:"id"`
    Name        *string    `json:"name"`
    Description *string    `json:"description"`
    Total       *int64     `json:"total"`
}

账户被定义为地图 accounts := make(map[int64][]string) 数据看起来像这样 map[1:[19565 21423] 7:[]]

我想做的是将这两个合并如下：

// merge into single struct
type CollectionWithAccounts struct {
    Collections []*collection.Collection
    AccountIDs  []string
}

// initialize struct
collectionsWithAccounts := make([]CollectionWithAccounts, 0)

// merge strucst in loop
for _, collection := range collections {
    for _, account := range accounts {
        collectionsWithAccounts.Collections = append(collectionsWithAccounts, collection)
        collectionsWithAccounts.Accounts = append(collectionsWithAccounts, account)
    }
}

我怎样才能完成这个合并？

Answer 1

即使没有任何循环，您也可以这样做：

package main

import "fmt"

type Collection struct {
    ID          int64   `json:"id"`
    Name        *string `json:"name"`
    Description *string `json:"description"`
    Total       *int64  `json:"total"`
}

type AccountID map[int64][]string

// merge into single struct
type CollectionWithAccounts struct {
    Collections []*Collection
    AccountIDs  []AccountID
}

func main() {
    // get the data
    // []*Collections, []AccountID, err
    collections, accounts, err := h.Service.Many(ctx, params)

    // handle error
    if err != nil {
        fmt.Println(err.Error())
        // more logic
    }

    collectionsWithAccounts := CollectionWithAccounts{
        Collections: collections,
        AccountIDs: accounts,
    }   
}

map 和 struct golang 的合并

Merging of map and struct golang

go