c# - 带有两个列表谓词的 LINQ？

Question

我有这样的代码:

string[] teamNames = teams.Select(x => x.Name).ToArray();
List<int> wins = new List<int>();
foreach(var _team in teamNames)
{
    wins.Add(matches.Count(x => 
        ((x.Team1 == _team && x.Maps.Count(map => map.Score1 > map.Score2) > x.Maps.Count(map => map.Score2 > map.Score1)) || 
        (x.Team2 == _team && x.Maps.Count(map => map.Score2 > map.Score1) > x.Maps.Count(map => map.Score1 > map.Score2))
        )));
}

我想知道您是否可以以某种方式计算每个团队的胜利，而不先使用 foreach ，这只会在团队名称之后产生团队名称。有什么想法/

Answer 1

您应该能够通过将 foreach 替换为 Select 来完成此操作:

var wins = teamNames
    .Select(_team =>
        matches.Count(x => 
        ((x.Team1 == _team && x.Maps.Count(map => map.Score1 > map.Score2) > x.Maps.Count(map => map.Score2 > map.Score1)) || 
        (x.Team2 == _team && x.Maps.Count(map => map.Score2 > map.Score1) > x.Maps.Count(map => map.Score1 > map.Score2))
        ))
    )
.ToArray();