如何使用Lambda语法从列表中删除

Question

鉴于:

List<Name> names = new List<Name>(); //list full of names

public void RemoveName(string name) {
   List<Name> n = names.Where(x => x.UserName == name);;
   names.Remove(n);
}

执行删除的Lambda语法是什么？

如果函数确实删除了,我怎么能得到"成功"的指示？

Answer 1

names.RemoveAll(x => x.UserName == name);

注意这里所有lambda语法都提供了一个Predicate<T>; lambda语法是完全无关的东西它最终做与拉姆达.

或者单场比赛(见评论):

var found = names.Find(x => x.UserName == name);
if(found != null) names.Remove(found);

要么:

var index = names.FindIndex(x => x.UserName == name);
if(index >= 0) names.RemoveAt(index);