dotPeek: a Totally Free Alternative for .NET Reflector

As a professional .NET developer you recognize the value of a .NET decompiler. There are many scenarios when the original source code is not available but requires an understanding and using a decompiler is definitely one of the best ways to look at the source code. One of the advantages working with a managed framework like .NET is an ability for a decompiler to convert an assembly into an code of a high level programming language like C# instead of a machine code. And this is exactly an expertise in which the dotPeek shines.

Problems Migrating From SQL Server Management Studio (SSMS) v17 to v18

If you are an active multi-year user of Microsoft SQL Server Management Studio you are probably well-used to a controversial history of this product as an arguably one of the most loved and hated at the same time and one of the most outdated as well. Understandably, with so many different active versions of Microsoft SQL Server the requirements for this product are quite challenging but the users (us) continue to vote for this tool to exist and push Microsoft to keep updating it regardless of many other alternatives available on the market.

Reorder Columns in Spark DataFrame with Select() and Scala

Sometimes, when dealing with a Spark data frame it may be necessary to reorder columns in a certain order. For example, to keep data consistent when trying to union two or more data frames with the same schema but different order of columns. Let's explore how that can be done relatively easy using a select() Spark SQL function.

Incorrect ReSharper Behavior for CS1591 Warning

After upgrading from Visual Studio 16.8.x to 16.9.x the JetBrains ReSharper suddenly started marking a lot of public identifiers in the code as compiler errors with a message: "Missing XML comment for publicly visible type or member...". You can imagine how that can be very annoying.

.NET Web API: Confusing 404 Response to OPTIONS Request for CORS pre-flight

Problem: when a Angular applications sends an OPTIONS request to its own backend to satisfy CORS preflight policy it unexpectedly receives a 404 response from a .NET Core Web API application that effectively blocks an actual data data request from executing correctly. If you have ever experienced this problem, continue reading to understand what the problem is and how to fix it.