{
"data": [
{
"id": 10,
"title": "Administration",
"active": true,
"type": {
"id": 2,
"name": "Manager"
}
},
{
"id": 207,
"title": "MCO - Exact Match 1",
"active": true,
"type": {
"id": 128,
"name": "Group"
}
},
{
"id": 1201,
"title": "Regression",
"active": false,
"type": {
"id": 2,
"name": "Manager"
}
}
]
}
我正在尝试使用linq以以下格式创建元组。不知道如何从组/聚合开始。任何帮助表示赞赏。我遍历了几个线程，无法找到与此类似的内容。
var tuple = new List<Tuple<int, List<Dictionary<int,bool>>>();
2 10, true
1201, false
128 207, true
答案 0 :(得分：0)
这是完整的工作代码：
Last-Modified这是它的工作方式：
If-None-Match是数据模型，使用匿名类型表示。显然，您可以在这里使用强类型模型（如果已有的话）； var o = new {
data = new [] {
new {
id = 10,
title = "Administration",
active = true,
type = new {
id = 2,
name = "Manager"
}
},
new {
id = 207,
title = "MCO - Exact Match 1",
active = true,
type = new {
id = 128,
name = "Group"
}
},
new {
id = 1201,
title = "Regression",
active = false,
type = new {
id = 2,
name = "Manager"
}
}
}
};
var result = o.data.GroupBy(
item => item.type.id, // the group key
item => new Dictionary<int, bool>() {{ item.id, item.active }}, // the transformed elements in the group
(id, items) => new Tuple<int, List<Dictionary<int, bool>>>(id, items.ToList()) // transformation of grouping result to the final desired format
).ToList();
// check correctness
foreach (var entry in result) {
Console.Write(entry.Item1);
foreach (var dict in entry.Item2) {
foreach (var kvp in dict)
Console.WriteLine("\t\t" + kvp.Key + "\t" + kvp.Value);
}
}
上，我们使用GroupBy的四参数版本，在official docs from Microsoft中进行了详细描述。基本上：
o格式；