Some days ago I've decided to experiment with react-native on my Ubuntu notebook. I've got spare time and found this article with information how to install Android Studio. Unfortunately, some tips were outdated. In this post I'll tell my story to workaround some missing pieces. As a bonus, I'll create hello-world Expo application and run on the real iOS device.

Actually, Expo applications are react-native based, they can be written on JavaScript, TypeScript also supported. Expo is a framework and a toolset to start development faster.

Let's start!

What if you use chromedriver for Selenium Web testing of your application? When new version of Google Chrome is out, the developers gets frustrated why does their tests are made unstable again?

There was some level of compatibility between chrome and chromedriver versions: chromedrivers has support for three latest released. But I found this has changed recently. The chromedriver 2.46 release was the latest release with "last three releases" supports policy.

Now chromedriver and chrome versions are coincide in MAJOR.MINOR.PATCH triad. Fourth number may differ when patches for current version are become available.

What if you'd like to check if some certificate is installed to current user certificates storage? What if the only thing you know about this certificate is serial number or thumbprint? What if there is more than one hundred certificates installed on machine?

You'll never find it manually by using Certificate Manager Tool (certmgr.msc), you need some automated solution.

Year ago I've wrote simple github-issue-comments component using vue.js. It was interesting to me to play with vue-component in sandbox. In this post I'll explain why the component was not ready to production and what I need to overcome the limitations.

By default, create-react-app doesn't supports decorators. Official position of Dan Abramov, maintainer of this library, is that decorators are not stable. They are in stage-2 at time of writing.

This position is understandable - decorators spec was changed with time and the best code - is not written code.

When I've done upgrading to Ubuntu 17.10 and rescuing it, I've found that remmina doesn't grab all the keys to guest system even using wayland backend.

It turns out that Wayland graphics server is promising, but still raw enough. Not all drivers and applications developers supports it right now. If fact, remmina has wayland support, but also has the issues.

Just after recovering my Ubuntu 17.10 installation I have found that Ubuntu looks and feels something different. Turns out it was because of Ubuntu 17.10 now uses gnome desktop environment instead of Ubuntu's Unity. In this post I'll share what I had tried to do to improve my user experience.

Recently I've upgraded Ubuntu to latest 17.10 Artful Aardvark. One of the evenings I've blindly executed do-release-upgrade like I does year ago for v16.04. Surprisingly for me, the command was done successfully. It was late and after installation I've turned off power for notebook and go to sleep.

Next morning I turned on my notebook and trapped in a nightmare :). It seemed like Ubuntu hungs right before it is going to show GUI desktop. Last I've seen on the screen was mysterious boot log:

...
[  OK  ] Started CUPS Scheduler
[  OK  ] Started Trigger anacron every hour
[  OK  ] Listening on CUPS Scheduler
         Starting Console System Startup Logging...
[  OK  ] Started systemd-resolved-update-resolvconf.path
[  OK  ] Reached target Paths
[  OK  ] Listening on Avahi mDNS/DNS-SD Stack Activation Socket
         Starting Socket activation for snappy daemon
[  OK  ] Listening on D-Bus System Message Bus Socket
         Starting systemd-resolved-update-resolvconf.service....r...server...p link was shut down....

This last line with many dots... There was thoughts in my mind that I'll need to reinstall the system from the scratch. And I'll need to save all my data before reinstall. Arggghh :)

Hopefully, I rescued my Ubuntu installation. In this blog post I'll list possible solutions that I've tried and one that really helped.

Bluebird.js is JavaScript library which implements Promises/A+ specification. In fact bluebird is more than this specification and implements additional helper functions. In this post I'll explore bluebird.map function and it's applications.

About half-year ago I read Don Williamson's blog post on how to replace Disqus comments engine with GitHub Comments (in russian). "Brilliant idea!", I thought, and I was inspired to implement same comments support for my blog some day. The day has come!

Yes, really, I used Disqus for this blog from the start but never liked it much. Increased page load time, so many requests to unfamiliar and strange URLs - nothing good for me and the readers, I think.

Now I had a few spare time to implement comments with GitHub API. I had decided to touch with Vue.js for presentation and learn the way to implement reusable components with it.

I decided to learn Vue.js and it's way to implement reusable components. Here I'll start series of blog posts covering my experience. I'll explore the tooling and configuration options for new Vue.js applications.

For now, I'm using redcarpet as markdown preprocessor for this blog. Last week I started to write long post with many headers and wanted to add a table of contents. It seems like kramdown preprocessor supports it out of the box, but redcarpet isn't. In this post I'll show the solution.

Unfortunately, official installing Node.js via package manager documentation has instructions only for LTS Node.js versions. Here I'll share my experience of troubleshooting Node.js installation.

What is actual state of .NET Core development for those who write NUnit tests?

Can we write cross-platform applications testing them with NUnit?

Is there are project templates like xUnit has?

Is there a tooling support for NUnit on par with xUnit and MSTest?

Couple days ago I asked myself these three questions. Here I'll show the results of exploration on the first day of summer 2017.

What if you have HTTP API based on protocol buffers and you want to add XML support to the API? You'd like to have one source of truth and you already have much of protocol buffer message definitions? You have unwanted option to write XSD Schema manually which is error-prone. Here I'll show how you can automate XSD schema generation from existing protocol buffers message definitions.

I have Google Analytics and Yandex Metrica counters embedded on this site and I have monitored site activity for a while. One metric I have worried about was site performance. Yes, this blog is jekyll-based static site. Can there be performance issues with static site content? I thought no, but Yandex Metrica shows me that performance issues are here. It may be slow 3G internet is in the game or I have Moscow's shared hosting issues, I can't be too sure. Here I'll show how to start using Content Delivery Network using Cloudflare as an example.

In my post from 2015 on build process of my own jekyll-based blog, I'd implemented blog deploy script with Gulp. It featured with html/css/js checking and minifications. It was very usable for final deploying of blog to hosting, but not much convenient when I wrote the posts.

Here is an explanation how I'd integrated browser-sync into my process.

There is a few difficulties in how to start signing content in NodeJS with GOST algorithms. Let's fight with them.