WebQ将是IpDTO类型的IEnumerable,并执行Q.ToList().ForEach(i=>i.PAINTIP(i));我会对结果做一个预测。这不是你想要的吗?我只需要使用IP调用PAINTIP函数,我在select:IP=z.select(x=>x.IP)中有IP。Distinct()IP可以提供丢失的IP号,函数PAINTIP只接收一个IP并绘制其历史。 WebSince the Select expression is returning the combined result, which is then processed, I'd imagine explicitly using the KeyValuePair value type would allow you to avoid any sort of heap allocations, so long as the .NET impl allocates value types on the stack and any state machine which LINQ may generate uses a field for the Select'd result which isn't …
How to tell if an IEnumerable is subject to deferred execution?
WebIEnumerable is the base interface for all non-generic collections that can be enumerated. For the generic version of this interface see System.Collections.Generic.IEnumerable. IEnumerable contains a single method, GetEnumerator, which returns an IEnumerator. IEnumerator provides the ability to iterate through the collection by exposing a ... WebSep 2, 2010 · If you want to sort a collection of strings in-place, you need to sort the original collection which implements IEnumerable, or turn an IEnumerable into a sortable collection first: List myList = myEnumerable.ToList (); myList.Sort (); _components = (from c in xml.Descendants ("component") let value = (string)c orderby ... sharon music ada oh
How Do Enumerators and Enumerables Work in C#? - How-To Geek
WebMay 23, 2024 · @Miryafa .Any () is an extension method that operates on IEnumerable (or IQueryable, although that's a different scenario). Doing so consumes the … WebDec 22, 2024 · The IEnumerable interface is the base for all the non-generic collections that can be enumerated. It exposes a single method GetEnumerator (). This method returns a … WebOct 25, 2024 · Here is the output: We can see that in the Test class we implemented the IEnumerable interface. Within the constructor we are creating a few objects of the Test class and added a method to add the objects of the Test class one by one. The GetEnumerator method will return an object of the Test class one by one because we … sharon music gillingham