The Bank for International Settlements (BIS) publishes statistics about the global financial system. The data is compiled in cooperation with central banks and other national authorities and provide information about financial stability. More information can be found on the BIS statistics website. Data exploration can be done either through the BIS Statistics Explorer, BIS Statistics… Read More »
“Striving for perfection” is probably the slogan when one of our project owners is writing requirements for our project. Over the past months we had to implement various UI enhancements which are not supported in WPF by default. Thanks to the flexibility of WPF, we managed to implement a lot of them. I will probably… Read More »
The implementation of the singleton pattern is pretty easy. However, despite the simplicity I see often that the pattern is being misused or implemented wrongly. What I’ve seen so far: The implementation is not thread-safe. (coding issue) Tight coupling: The business code/logic accesses a static property of a class in order to utilize the singleton… Read More »
Yes.. this ist just another blog post about IEnumerable and IQueryable. But the topic is quite important and I think it worth discussing about both approaches. Recently I had a discussion with a software architect about the implementation of the repository pattern. The question was: Should the repository return IEnumerable or IQueryable? So let’s do… Read More »
In one of our projects we had to transfer large data from the server to the client WPF application. In the beginning we had some performance issues. Therefore we decided to do some comparisons between ASP.NET Web API, WCF (with and without protobuf-net). The configuration: ASP.NET Web API WCF (Protobuf) WCF – Protobuf serializer –… Read More »
After coding unit tests the whole day, I decided to create a nice Visual Studio snippet which helps me to write the test method quicker. I usually structure my unit tests like this: public void Validate_ReturnsFalse_WhenStringIsTooLong() { // Arrange var expectedResult = false; var watheverMock = new Mock<IWathever>(); // Act var validator = new Validator(watheverMock.Object);… Read More »
In my current project I had to generate a Entity Framework query based on some search criterias defined in a dictionary. The structure of the dictionary was similar to this example here: var searchCriteria = new Dictionary<string, List<string>>() { { "FirstName", new List<string> { "Darko", "NoName" } }, { "LastName", new List<string> { "Micic", "Müller",… Read More »
Recently I had to build a very dynamic DataGrid in WPF, in which the columns were constructed dynamically. And some rows did not contain data for each generated column. I stored the dynamic values in a dictionary and bound the dynamic columns to the indexer property. The problem was that the dictionary throw an KeyNotFoundException… Read More »
Back to: F# Journey: Course 2- Type Inference The concept of a function exists is in F# too. However, it’s slightly different than in C#. A F# function has a name, list of parameters and a return value. The function itself is assigned to a value with the “let” keyword. The parameter types are inferred… Read More »
Every .NET developer has already used an Ambient Context without knowing it. A typical Ambient Context is: using (var tx = new TransactionScope()) { …. } The pattern is not very well known. Here is one good description I found: The Wandering Glitch – Ambient Context I found this pattern very useful for displaying progress/busy… Read More »