Posts

Reviving old hardware en mass or: How I Learned to Stop Worrying and Love the ZorinOS Linux Distribution

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Let's see how we can help upgrade and stabilize the school's computers in the classes and labs he saidBut as I wrote before the Local Council's finances are in dire straights.TL;DR The end may be happy. but the journey was glorious.





The state of computers in classes and labs Hardware ranging from the last generation of dual core Pentiums to 4th generation i7s with a sprinkle of, surprisingly fast but with very low memory and cache, dual core 64bit AMDs. Packed with dust, ridden with useless software and desktops full of documents over Windows 7 and some Windows 10 build 1803 or less. The list of complaints on slow or stuck PCs is getting longer by the day. The phrase "It does not work" appears in every other row on a spreadsheet. It is the end of June 2019, School year starts September 1st, the teachers do not know what they need on the PCs but they need it working and time is running out. 250 Windows and Office licences... Apparently Windows and Office licens…

Volunteering in school IT - A retrospective

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The purpose for a PC in a school is to be a teaching tool and not a hurdle.
This is a retrospective of the most interesting volunteer work I have ever done (and still do). I live in a small town (~9000 residents), governed by a Local Council. As it happens the Local Council's finances are in dire straits (which I will not go into at all) and at the 3 schools within its jurisdiction (in two of them my children study), 2 primary schools and one middle school, the PCs in the classes have fallen to disarray. TL;DR No such thing this time. Read on


How it all begun Somewhere around June 2019 one of the council members mentioned that he is trying to devise a plan to upgrade the school's computers and network infrastructures. Long story short I found myself willingly involved in that project spearheading change on the field while said council member spearheads change in administrative levels on the education board. I will spare you the long night hours upgrading OSs, the mistakes and …

Evaluating NDepend on current codebase Part 2

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In Part 1 we saw a first approach to NDepend starting off with analyzing a project of 2 assemblies and focusing on the smaller assembly. In this part we will focus on the main executable and the gems NDepend discovered in it TL; DR Memory leak detected...


Enter 3 years old WPF project - Main executable Going back to the dashboard I see the "usual" long types or methods errors, some immutability warnings, which I would have set as errors and 400 violations of "Avoid namespaces mutually dependent" some with debt time of 4 days. "Oh come on.. what 4 days. How hard can it be..."
Drilling down into the code (a wpf application) I realize that there is a single class that is injected in the constructor of every view model and I hardly see any services in the system save for calls to the DAL assembly.
Without drilling down into the class I changed it's namespace and made the necessary, albeit sisyphic, changes to all the classes. While at it I noticed that so…

Evaluating NDepend on current code base Part 1

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A while ago I was asked by one of NDepend's founders to evaluate any .NET code base I wanted with NDepend and write a blog post about it. It turns out I came up with a two-part post. TL; DR Oh boy....


Enter 3 years old WPF project Without revealing the nature of the specific project I would just say it is a feature rich client, with UI elements customized to the customer's needs. It is written using MVVM, some third party grids and communicates with an SQL Server database via a classic  DAL class library. All and all the project is comprised of one executable and one DAL assembly.
So off I went and added the necessary assemblies to a new NDepend project and let the analysis run. Given the size of the project it was pretty swift and started off with a a dashboard (or at least this is the view I chose to start from).


At the same time a very nifty HTML based dashboard popped up in my browser



The dashboard (as expected from its name) gives one a very good 10000 feet overview of th…

Tests code coverage in Visual Studio Code with C# and .Net Core

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While writing tests for you code goes without saying, there is much to be said about code coverage of tests. How much of your code is actually covered by these tens of tests you just wrote? If you work in a TDD approach most probably you don't have such "mundane" questions. Of course you code is 100% covered. You did make sure every test failed before you added that line in your code to make it pass... and that conditional statement... or did you? While purists would argue there is no chance of no coverage I beg to differ. Let alone if you write your tests after the code is written... After such and such years and experience in the industry when we are nearing deadlines some things are thrown out the window. They shouldn't but they are. TL;DR tools help with coverage. In this case .Net Core Test Explorer with coverlet and Coverage Gutters.

Coverlet to the rescue As I blogged a while ago I have made myself a warm and cozy development environment for Visual Studio Code…

Visual Studio Code setup I use for C# development

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Visual Studio Code has been around a while. However most of the extensions or blog posts out there relate mainly to extensions that facilitate development in JavaScript environments such as Angular, React or NodeJs (to name a few) and even Rust! The IDE is getting great reviews as being fast to load and very responsive as opposed to its bloated and heavy bigger brother, Visual Studio. TL;DR I switched from Visual Studio for good

Having worked on Visual Studio since version 4.2 I was used to it being heavy to load and at times even slow to respond. After experiencing VS Code with a little bit of NodeJs development I decided to try and make it my daily driver for .Net Core and C# development. I sought to find extensions to ease my day in the cubicle and see how comfortable will I be with it. I would give it a month on various tasks and workloads.

The month became two months and then 3 months and here I am with a list of very handy (in my opinion) extensions for vscode. Some of them usef…

Using custom health checks with Asp.Net Core 2.2

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I almost burst with cries of joy when I saw the release of .Net Core 2.2 with the much needed built in and standardized health checks. The preview was great and with each version until the release new blog posts emerged eager to show to the world the new wonder. But as I do like my frameworks fully baked and released I waited patiently for the real deal.
TL;DR Implement your own service from IHealthCheck and inject it with whatever you want. It just works!
Reading the instructions... The best article I found for the new healthcheck API was this one based on preview code and the best code samples where of course the official samples. However by looking at them something was missing. So I went on a quest to achieve what suited my needs. And my needs are simple. I need to be able to inject some testing code to my custom health check module.
On to the code After I practiced a little bit with the concept of tags I just added a health checking service to the standard DI container as such Odd…