9+ Enumerable.Empty Vs New List
This code produces the following output. It returns EmptyEnumerableInstance which is defined as.
Groovy Language Documentation
When the object it returns is enumerated it yields no elements.
. Internal class EmptyEnumerable public static readonly T Instance new T 0. List numbers new List. IList randomList random null.
IEnumerable will not execute the query until you enumerate over the data whereas List will. In some cases this method is useful for passing an empty sequence to a user-defined method that takes an. It might also be a bit more efficient but thats only a.
As for using them. So in summary. 0 Remarks This.
In the similar fashion I used new List Ctor new List 0 Ctor0. The primary difference is the return type. Your code clearly indicates your intentions.
New List. ArrayEmpty returns T an array whereas EnumerableEmpty returns IEnumerable an enumerable. Foreach int number in numbersDefaultIfEmpty ConsoleWriteLine number.
Solution 2 I think EnumerableEmpty is better because it is more explicit. An empty sequence suggests that. IEnumerable random GetRandomNumbers.
Use EnumerableEmpty instead of new List Issue 304 RalfKobanMiKo-Analyzers GitHub If a method has a IEnumerable as return value then we should. IEnumerable is simply an interface List is a class implementing this interface and a couple more. When you accept a list of objects might be IEnumerable or IList or.
IEnumerable is a deferred execution while List is an immediate execution. The list is different because theres no ListEmpty or something like that. The Empty method caches an empty sequence of type.
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