C# 在 LINQ 中展平列表
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Flatten List in LINQ
提问by Cédric Boivin
I have a LINQ query which returns IEnumerable<List<int>>
but i want to return only List<int>
so i want to merge all my record in my IEnumerable<List<int>>
to only one array.
我有一个 LINQ 查询返回IEnumerable<List<int>>
但我只想返回List<int>
所以我想将我的所有记录合并IEnumerable<List<int>>
到一个数组中。
Example :
例子 :
IEnumerable<List<int>> iList = from number in
(from no in Method() select no) select number;
I want to take all my result IEnumerable<List<int>>
to only one List<int>
我想把我所有的结果都IEnumerable<List<int>>
变成一个List<int>
Hence, from source arrays: [1,2,3,4] and [5,6,7]
因此,从源数组:[1,2,3,4] 和 [5,6,7]
I want only one array [1,2,3,4,5,6,7]
我只想要一个数组 [1,2,3,4,5,6,7]
Thanks
谢谢
采纳答案by Mike Two
回答by mqp
Like this?
像这样?
var iList = Method().SelectMany(n => n);
回答by Daniel
If you have a List<List<int>> k
you can do
如果你有List<List<int>> k
你可以做的
List<int> flatList= k.SelectMany( v => v).ToList();
回答by Dylan Beattie
iList.SelectMany(x => x).ToArray()
回答by recursive
With query syntax:
使用查询语法:
var values =
from inner in outer
from value in inner
select value;