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1. #C# create an empty file how to#
2. #C# create an empty file code#
3. #C# create an empty file professional#

#C# create an empty file professional#

He's Microsoft Most Valuable Professional and frequent speaker. He's focused on data and business layers, language constructs, parallelism, databases and performance. Intel Core i5-7500 CPU 3.40GHz (Kaby Lake), 1 CPU, 4 logical and 4 physical cores AppendixĮxecution was done in this environment. For list, it is just using new List() aka the most straightforward way. The fastest way to get an empty array in using Array.Empty() call. The EnumerableEmpty is next and again relying on the EmptyPartition’s specific ToList implementation (which in turn just does the same call as Ctor).įinally, the ArrayEmpty is slowest because there’s no specific optimization for this case. The method automatically creates a new, empty. I wasn’t expecting that much of a difference. createNewFile() is a method of File class which belongs to a java.io package. Surprisingly, the Ctor compared to Ctor0 is about a half. So, no matter the approach all allocate and allocate the same amount (the list itself, which in turn contains the array and 2 int fields).

#C# create an empty file code#

The first two look the same, but Ctor0 has a a little bit more code to execute (including branching). In the similar fashion I used new List() ( Ctor), new List(0) ( Ctor0), Array.Empty().ToList() ( ArrayEmpty) and Enumerable.Empty().ToList() ( EnumerableEmpty). The list is different because there’s no List.Empty or something like that. But how about the list (that I actually needed)? List By the way, the file where EmptyPartition is, is called. The reason is the implementation behind it is EmptyPartition with specific ToArray implementation where again Array.Empty is used. The Enumerable.Empty version is slowest, kind of expected. Creating Excel files in C can be simple, even without dependency on the legacy library.

#C# create an empty file how to#

The downside is obviously the allocation of the real array, there’s no caching, etc. This tutorial will guide you step-by-step on how to create an Excel Workbook file on any platform that supports. The Ctor and CtorInit are virually the same, because it’s just a different syntax for same IL.

That makes sense, because it just returns a reference to a static generic class with a static field holding the empty array. MethodĪs expected, the Array.Empty is clear winner. Tabs ↹ over ␣ ␣ ␣ spaces by Jiří ( CtorInit), Array.Empty() ( ArrayEmpty) and Enumerable.Empty().ToArray() ( EnumerableEmpty).