问题描述
与C#特定问题相比,这更像是一个与语言无关的问题,但是由于它处理的是命名空间,所以我认为我会将其标记为与.NET相关.
This is more of a language-agnostic question than a C#-specific one, but since it deals with namespaces I thought I'd tag this as .NET-related.
假设您有一堆代表名称空间的字符串:
Say you have a bunch of strings that represent namespaces:
[
"System",
"System.Windows",
"System.Windows.Input",
"System.Windows.Converters",
"System.Windows.Markup",
"System.Windows.Markup.Primitives",
"System.IO",
"System.IO.Packaging"
]
您要以某种方式过滤它们,以排除任何包含"集合中另一个名称空间的名称空间.例如,由于System
包含System.Windows
,因此将其排除在外.由于System.IO
是System.IO.Packaging
的父级,因此也将其排除在外.这一直持续到您得到以下结果为止:
You want to filter them in such a way that any namespace that 'contains' another namespace in the collection is excluded. For example, since System
contains System.Windows
, it's excluded. Since System.IO
is a parent of System.IO.Packaging
, it's likewise excluded. This continues until you end up with this:
[
"System.Windows.Input",
"System.Windows.Converters",
"System.Windows.Markup.Primitives",
"System.IO.Packaging"
]
在C#中以这种方式过滤列表的有效方法是什么?我正在寻找一种看起来像这样的方法:
What would be an efficient way to filter a list this way in C#? I'm looking for a method that will look something like this:
public IEnumerable<string> FilterNamespaces(IEnumerable<string> namespaces) {}
任何帮助将不胜感激,谢谢!
Any help would be appreciated, thanks!
编辑:这最终对我有用:
public IEnumerable<string> FilterNamespaces(IEnumerable<string> namespaces) =>
namespaces.Where(current => !namespaces.Any(n => n.StartsWith($"{current}.")));
推荐答案
尝试关注
public static IEnumerable<string> FilterNamespaces(IEnumerable<string> namespaces)
=> namespaces
.Where(ns => namespaces
.Where(n => n != ns)
.All(n => !Regex.IsMatch(n, $@"{Regex.Escape(ns)}[\.\n]")))
.Distinct();
这篇关于C#:在这种情况下,我将如何过滤掉不需要的名称空间?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!