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2025 on Tumblr: Trends That Defined the Year
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Agile leadership: results
A couple of weeks back I have reached out for help for my MSc thesis about leadership in organisations of different size. I have received 200+ responses overall, and 166 complete, usable responses based on which I managed to complete the following report:
Leadership in Agile
A big thank you goes out to all of you who made this possible. Thank you for your time, response and support; I am really…
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Agile leadership: request for participation
Agile leadership: request for participation
For the past months I’ve been researching what characteristics an Agile Leader needs in companies of different sizes, for my MSc thesis. I’ve now reached the data collection phase. If you are working in an Agile team, please fill out the following survey to help my work. It will not take more than 10 minutes.
In return, I promise to make the results available here on this site, as soon as I…
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Notes to myself: free CD pipeline for home projects
Notes to myself: free CD pipeline for home projects
I’ve been building a little home project for the past couple of months, just to experiment with programming languages and frameworks. During this time I managed to put together a simple continuous delivery pipeline, completely automated and free of charge. In the following paragraphs I’ll describe how I, in my next home project should connect those pieces of puzzles together. Maybe it will be…
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Comparing web services for output equality
Comparing web services for output equality
The other day I had to figure out a way to compare two different web services to see whether a subset of their output are equal or not. One of these services (let’s call it the legacy service) is capable of emitting XML as a response, while the other one (a completely new service that is intended to be a replacement for the legacy code) uses JSON. Unfortunately, the output of these two are only…
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Design patterns in the real world: Strategy
Design patterns in the real world: Strategy
Quite some software engineers think that design patterns are some overly complicated, mythical, abstract things that bring no practical value to software development. This is unfortunate. In order to prove they are indeed something real, in this (and some upcoming) post(s) we are going to take a look on a few examples on how real software products implement some of the GoF design patterns. Today,…
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5 easy ways to write hard to test code
5 easy ways to write hard to test code
Once I heard a talk, where the presenter asked the audience how would they write hard to test code on purpose. People in the room were a bit shocked, as nobody would write bad code intentionally. As far as I remember, they couldn’t even come up with very good answers to this question.
Of course, the purpose of this question was not to educate people on how to code in a way that makes their…
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Design patterns in the real world: Flyweight
Design patterns in the real world: Flyweight
Quite some software engineers think that design patterns are some overly complicated, mythical, abstract things that bring no practical value to software development. This is unfortunate. In order to prove they are indeed something real, in this (and some upcoming) post(s) we are going to take a look on a few examples on how real software products implement some of the GoF design patterns. The…
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Programming interviews - observations, tips
Programming interviews – observations, tips
For the past 2+ years, I’ve interviewed more than 150 people for different Java positions, from junior to senior+ levels. During these technical discussions, I’ve observed a number of strange patterns repeating over and over again. Some of these are really counter-intuitive, maybe I’ll be talking about these in a different post.
All these interviews were really, really different, but one thing is…
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Java 8 HashMaps, Keys and the Comparable interface
Java 8 HashMaps, Keys and the Comparable interface
/** * This post is intended to be a 101 quickie for the less experienced. * It does not provide new or innovative ways of solving a certain problem, * just summarizes a topic the way I see it. * **/
Java 8 is coming with a lot of improvements/enhancements compared to the previous version. There are pretty many classes that have been updated, HashMap -as one of the most used data…
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Writing integration tests for RabbitMQ-based components
Writing integration tests for RabbitMQ-based components
I’m writing this post after days of misery, reverse-engineering, github browsing and finding (sort of) clever ways to get yet one step closer to the goal mentioned in the title.
Before we dive into the topic, let me clarify a few things. RabbitMQ, an AMQP (advanced message queueing protocol) compatible message oriented middleware, (in my understanding) has no in-memory message broker…
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Work in the constructor anti-pattern
Work in the constructor anti-pattern
/** * This post is intended to be a 101 quickie for the less experienced. * It does not provide new or innovative ways of solving a certain problem, * just summarizes a topic the way I see it. * **/
This is a topic many have already talked about (a lot), but it still pops up from time to time. Strangely enough, not only in case of junior developers.
The situation
Given a constructor full of…
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