In order to cleanse the data as we parse it, we thought using a try/catch would be ok. If we don’t catch the exceptions, we’re good, right?
Turns out it kills our performance when we throw a lot of exceptions, even if we don’t catch them. Each exception has some costs . We needed to find a way to handle this data without involving exceptions.
TryParse turns out to be a method designed to solve our problem. We ran some benchmarks to prove it.
Those of you who worked with ASP.NET web forms will recollect that certain server controls such as DropDownList have a property called AutoPostBack. This property when set to true automatically submits the form to the server whenever the selection changes and raises some server side event. In modern web development people prefer to use Ajax over AutoPostBack but at times AutoPostBack is what you might need. To that end this article shows how AutoPostBack can be implemented in ASP.NET Core applications.
public static bool TryGetNonEnumeratedCount(this IEnumerable<T> source, out int count);
if (movies.TryGetNonEnumeratedCount(out int count)) { Console.WriteLine($"The count is {count}"); } else { Console.WriteLine("Could not get a count of movies without enumerating the collection"); }
#C به عنوان یک زبان سیستمی
When you think about C#, you'll usually think about a high-level language, one that is utilized to build websites, APIs, and desktop applications. However, from its inception, C# had the foundation to be used as a system language, with facilities that allow you direct memory access and fine-grained control over memory and execution.
101 مثال از LINQ در اندروید
NET 8 RC1. منتشر شد
نگاهی به ویژگی های جدید 6 #C
The C# language itself has changed little in version 6, the main importance of the release being the introduction of the Roslyn .NET Compiler Platform. However the New features and improvements that have been made to C# are welcome because they are aimed at aiding productivity. Paulo Morgado explains what they are, and how to use them.