About Michal Ciechan.

UK/London based .NET Full Stack Developer always looking for new challenges with a passion for all things tech, IT, finance, maths, and software related as well as everything else that comes along with it.

If you need to get in touch, just leave a comment and I’ll get back to you or find me on any of the other sites.

.NET No-Op Delegate vs if vs Rx

Recently I’ve had on my mind, what is the most performant way to do optional logging, e.g. Tracing in particular, where by default it is turned off, but by using some sort of switch/command line argument, I can turn it on for extra info when trying to debug something on a users machine, and therefore…


TDD – Mock.Throw Interface Call Verification Technique

First of all I did not know what to call this post, so it is what it is. If you have any better suggestions leave a comment! Often I find myself writing a class which ties multiple classes together. I like to call these controllers. Therefore using a MVVMC (Model-View-ViewModel-Controller) pattern which is a combination…


WPF – MVVM Animated Dialogs

Recently someone asked what is a good way to show animated dialog boxes/controls while keeping the views and view models separated in an MVVM fashion. My answer was to use data templates! Such that, you have a view model to represent a dialog box/control (I will refer to these as simply dialogs), whether it be…


.NET Multiple LINQs vs Single foreach


Rx Request Response Throttle

My most recent project at work was to introduce a Request Response messaging API into one our systems, as previously we were receiving a daily batch file with upwards of 4m entries when we only needed around 500-1,000 of them. One of the restrictions was that we had to have mechanisms in place to ensure we did…


.NET Nested Loops vs Hash Lookups

Recently I was tasked with improving the performance for a number of processes we have at work as some of these processes where taking as long as 25 mins to complete. After some initial investigation I noticed all 3 processes suffered from the same issue… Nested Loops. Basically the slow running code could be represented by…

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