C# List中的ForEach

 

 

int a = 0;

List<string> aaa = new List<string>(){ "aaa", "bbb" };

aaa.ForEach(s => a += s.Length);
//等价于aaa.ForEach(new Action<string>((s) => a += s.Length));



list.ForEach(m=>m.Id=NextId())