e0ne's comments

TypeScript vs JavaScript

Published at February 12, 2019 ·  1 min read

TypeScript is a typed superset of JavaScript. I like this language for it type system over “standard” JavaScript. Since it’s just a extension to JavaScript it’s easy to start it. Other type checkers like Flow look less native for me. I prefer to use TypeScript instead of JavaScript because it’s simple to use and doesn’t require a lot of knowledge from the beginning. From the other side, I like JavaScript because it’s a dynamic typed language with allows you to do everything you need....

Some usefeul JavaScript articles (if you didn't use Javascript suring the last 5 years)

Published at February 11, 2019 ·  1 min read

If you like me didn’t write any lines of code in JavaScript during the last 5 years, you will be surprised how it changed. I won’t re-write all existing blog posts and manuals because of two reasons: I’m too lazy for these things and I’m not feeling that I can do it better. I’ll leave the references for two topics I’ve found useful for me: variables declarations and modules. I like MDN, so I’ll use it for references....

Object-oriented Design

Published at February 10, 2019 ·  1 min read

It’s mostly a reminder to myself that it’s a time to read this book again. I the past, when I used C# instead of Python in my daily job, I read a lot of books about object-oriented programming and design, patterns and software architecture. C# like a Java is object-oriented programming language. It means you have to create objects for everything. It seems very heavyweight, so I switched to Python....

I don't believe performance tests results

Published at February 9, 2019 ·  2 min read

Performance testing is one of the most complex and hard types of testing. It’s really hard to make fair tests which fit everyone. There are a lot of things which can impact the measurement result. That’s why I don’t believe any particular test result which I found on the Internet. If you are a software or hardware vendor, it’s a big temptation to test only your strengths. Even if you want to get fair results, you can miss something during the testing or don’t have enough results to see a performance impact....

Why I don't like React

Published at February 8, 2019 ·  2 min read

I wanted to name this post as ‘pros and cons of React’, but I didn’t find good benefits that would push me to use this library. One thing I like that it tries to promote reactive programming, but it does it not really good, IMO. I like Rxjs and I really think that there are a lot of great things which could be borrowed from Rxjs to React to make it more functional....

How to Get Hardware Info in MacOS From CLI

Published at February 7, 2019 ·  1 min read

I know that most MacOS users use GUI instead of CLI but sometimes it’s faster to use CLI. A also prefer command line when I need to copy results: it’s easier to copy text rather than do snapshots even with hotkeys and send it. There are two tools I use to get hardware info: system_profiler and sysctl. I do not like to copy the documentation, so I just drop a few most interesting for me commands:...

Build VM for Devstack

Published at February 6, 2019 ·  2 min read

I posted already about diskimage-builder and Docker integration. This is a follow-up post about it and Everything-as-a-code approach. Since it takes more time than expected (honestly, I didn’t to any estimations but it seems that it could be done faster), I’ll post you some tips I use for my development environment automation even if it’s not a production-ready solution, but it already could be used if somebody needs it. Almost any work with upstream OpenStack starts with VM setup with Devstack and required configuration....

Boring and Routine Tasks

Published at February 5, 2019 ·  1 min read

Nobody likes boring and routine tasks at all. It’s a good idea to do something interesting and challenging each day. I’m sure that you can find such a task on any kind of job you have. You just need to find 5-10 minutes for it and you’ll find something interesting to do. I failed today. Only boring ad routine tasks during the day. I’ll do my best to fix this tomorrow and post something interesting for you....

OpenStack Horizon: integration tests for plugins (part 2, CI)

Published at February 4, 2019 ·  2 min read

It’s a small addition to my previous post. I don’t like to edit my previous posts. The only exception is when I have to fix some typos, spelling error, links, etc. During the previous post, I described how to implement integration tests for the Horizon plugins, but I didn’t have enough time to implement and verify CI for it. It’s time to fix this. We’ve got really awesome CI in the OpenStack....

Using JSX outside React application

Published at February 3, 2019 ·  1 min read

I’m not a fan of the React at all. I prefer to use VueJS wherever it’s possible. But React is really one of the most popular JavaScript libraries now. There are a lot of people who use it and like it. One of the most important parts of React is JSX - “a syntax extension to JavaScript. It is similar to a template language, but it has full power of JavaScript”....

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