在Go语言中,存储和迭代命名的嵌套数据结构的惯用方式是什么?

huangapple go评论85阅读模式
英文:

Idiomatic way to store and iterate over a named nested data structure in Go?

问题

我的问题分为两部分:(1)如何最好地存储下面的taskList数据,(2)如何最好地迭代这样的结构?

我希望task1有名称,因为它们是唯一的任务,不应该有ID冲突。我希望每个subtask0都有独立的名称,因为它们是具有不同要求的唯一任务。

以下是我意图的伪Go表示:

package main

import "fmt"

func main() {
    const taskList = {
        "task1": {
            "subtask0": "api.example.com/stuff/",
            "subtask1": "api.example.com/stuff/",
            "subtask2": "api.example.com/stuff/",
        },
        "task2": { 
            "subtask0": "api.example.com/stuff/",
            "subtask1": "api.example.com/stuff/",
            "subtask2": "api.example.com/stuff/",
        },
    }

    for i := range taskList {
        for j := range taskList[i] {
            fmt.Printf("%s\n", taskList[i][j])
        }
    }
}

我尝试过使用结构体,但在结构体上迭代时遇到了困难。我想避免使用map,因为Go不允许我将其存储在const中。

英文:

My question is split into two: (1) what's the best way to store the data for taskList below, and (2) what's the best way to iterate over such a structure?

I want the task1 named because they are unique tasks and there shouldn't be an ID collision. I want individually named subtask0 because they are unique tasks with different requirements.

Below is a pseudo-Go representation of my intention:

package main

import "fmt"

fn main() {
    const taskList := {
        "task1": {
            "subtask0": "api.example.com/stuff/"
            "subtask1": "api.example.com/stuff/"
            "subtask2": "api.example.com/stuff/"
        }
        "task2": { 
            "subtask0": "api.example.com/stuff/"
            "subtask1": "api.example.com/stuff/"
            "subtask2": "api.example.com/stuff/"
        }
    }

    for i := range taskList {
        for j := range taskList[i] {
            fmt.Printf("%s\n", taskList[i][j])
        }
    }
}

I've tried struct, but I had difficulty iterating over the struct. I wanted to avoid map because Go wouldn't let me store it in a const.

答案1

得分: 1

根据我在你的伪代码中看到的内容和从评论中听到的内容,我会选择使用结构体的切片的切片:

所以我会定义一个结构体:

type subtask struct {
    name string
    kind int
}

其中name将是你的api.example.com/stuff/kind将是你的子任务类型:

我将对它们进行不同的处理(一些API需要不同的标头)

然后你的列表将如下所示:

list := [][]subtask{
    []subtask{subtask{"example1", 1}, subtask{"example2", 1}},
    []subtask{subtask{"example3", 1}, subtask{"example4", 2}},
}

这里是一个完整的工作示例 Playground

英文:

Based on what I saw in your pseudocode and based on what I heard from the comments, I would go with slice of slices of struct:

So I would define a struct:

type subtask struct {
    name string
    kind int
}

where name would be your api.example.com/stuff/ and kind would be a type of your subtask:

> I will be treating them differently (some API's want different
> headers)

Then your list would look like this:

list := [][]subtask{
	[]subtask{subtask{"example1", 1}, subtask{"example2", 1}},
	[]subtask{subtask{"example3", 1}, subtask{"example4", 2}},
}

And fully working example is here <kbd>Playground</kbd>

huangapple
  • 本文由 发表于 2016年1月11日 11:19:01
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