From the C# documentation it states that the @ symbol is an Identifier. 2.4.2 Identifiers The prefix “@” enables the use of keywords as identifiers, which is useful when interfacing with other programming languages. The character @ is not actually part of the identifier, so the identifier might be seen in other languages as a […]
Category: .NET
Was detecting a file stream if it was Unicode encoded or not, so though I would share the code. Let say you an xml file that you need to detect if it has the Unicode BOM in the file. If you wish to know more about BOM look it up at wikipedia
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//open the helloworld.xml file Stream fs = new FileStream("helloworld.xml", FileMode.Open); byte[] bits = new byte[3]; fs.Read(bits, 0, 3); // UTF8 BOM is like 0xEF,0xBB,0xBF if (bits[0] == 0xEF && bits[1] == 0xBB && bits[2] == 0xBF) { //utf8 do something } //UTF16 BOM is like 0xFF, 0xFE if (bits[0] == 0xFF && bits[1] == 0xFE) { //utf16 do something } |
Hope that […]
C# Func vs. Action? What is the difference between a Func vs an Action in C#? The main difference is whether one wants the delegate to return a value or not. By using Func it will expect the delegate to return a value and Action for no value (void) 1. Func for methods that return […]
During the summer I have been busy working on my book “Instant AutoMapper“, and it did get released at the end of July of this year 2013. Here is a link on amazon and packt publishing.
Over the weekend I upgrade to win 8.1 and after upgrade I found my disk usage at 100% and it was getting super slow, plus I only had couple of Gig left on it. The solution I found was to do a disk cleanup, using the cleanupmgr.exe Here are the steps: 1. Use windows key […]
Lots of developers confuse the var keyword in C# with JavaScript. The var keyword was introduced in C# 3.0, and it is basically implicitly defined but is statically defined, var are resolved at compile time not at run-time. The confusion is there also a var keyword in JavaScript, but in JavaScript var is dynamically defined. […]
Recently I was asked a simple code to improve the performance, and at first I couldn’t see it but as you know your brain starts working when you aren’t thinking of the problem anymore. (It happen to me when I was driving) Anyway the problem on hand was there is a for loop and when […]
Was going through some legacy code recently and found a big for loop that had multiple switch statement inside. So being that I hate something that is fairly large, every method should be small and concise, I went along to refactor it to SRP. This code is generic so you might see something like this […]
Here is some poorly written code that I had to review today and modify (i.e refactor). I have removed the domain of the code and renamed the variables, so that it remains anonymous, but the just of the code is still intact.
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var itemCount = 0; if (users.ShoppingCart != null && user.ShoppingCart > 0) { foreach (var cart in user.ShoppingCart) { if (cart.Items != null && cart.Items.Count > 0) { foreach (var item in cart.Items) { itemCount++; } } } } |
Lets go through the inner loop of the code first. First the […]
Here is a quick way to detect if a text is in Canadian Aboriginal Syllabic in C#. It is just an extension method that would detect if your string is in that range by using regex.
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public static bool IsInuktitut(this string input) { if (string.IsNullOrEmpty(input)) { return false; } //http://msdn.microsoft.com/en-us/library/20bw873z.aspx //look at section Supported Named Blocks const string pattern = @"\p{IsUnifiedCanadianAboriginalSyllabics}"; Match match = Regex.Match(input, pattern); return match.Success; } |
Enjoy.
