Thomas Sundberg is an independent consultant based in Stockholm, Sweden. He has a Masters degree in Computer Science from the Royal Institute of Technology, KTH, in Stockholm. Thomas has been working as a developer for more than 20 years and has developed an obsession for technical excellence. This translates to Software Craftsmanship, Clean Code and Test Automation.
Cucumber JVM is a tool that allows development teams to describe how software should behave in plain text. The text is written in a business-readable domain-specific language and serves as documentation, automated test and development-aid – all rolled into one format. Cucumber JVM enables the implementation of Behaviour Driven Development in an organization that uses JVM for development.
Enjoy his presentation @ I T.A.K.E. Unconference 2014 edition.
Until recently, layered architecture was the most common way of organizing large applications or modules. We’ve learned from practice that it has limitations:
- business rules tend to escape or be duplicated in UI and/or data layer
- switching from a database to another is very difficult
- adding another UI to the application (eg. mobile or smart client) requires heavy changes
- changing a library used by the application with another is often complex and risky
A new architecture style has appeared in the recent years that tackles this problem: Hexagonal Architecture, or Ports & Adapters. Its intent is to allow more flexibility by cleanly separating business rules from everything else.
Johann Martinsson and Rémy Sanlaville have described the basics of Hexagonal Architecture and then shown an example of such an architecture.
Enjoy their presentation @ I T.A.K.E. Unconference 2014 edition. Curious about 2015 edition?
#1. SHARE TOP 5 THINGS YOU DID THAT HELPED YOU GROW & BECOME THE PROFESSIONAL YOU ARE TODAY
- Reading software development books hungrily in the first few years of my career. Texts such as Code Complete and especially The Pragmatic Programmer and Test-Driven Development by Example were hugely influential on my early career and the direction I chose to take. The Pragmatic Programmer in particular is worth re-reading: I didn’t fully understand some parts of it as a fresh graduate joining the industry, and the experience I’ve built up over the last ten years has allowed me to get more from it on each later reading.
- Attending developer meetups, user groups, and conferences. Aside from the knowledge gained from the talks and workshops run at these events, they’re an invaluable opportunity to meet other developers, learn from their experiences, and about the local software industry.
- Finding a good mentor. As it turned out, my mentoring was very unofficial: a former colleague of mine guided me in the ways of professional software development, and pointed me in the direction of books, blogs, and other resources to learn from. His advice was invaluable in helping me discover techniques for writing good tests (and why tests are important), the importance of refactoring, and the foundational principles of Object-Oriented Design, such as SOLID. All of this at the beginning of my career, in an environment where I wouldn’t have otherwise been exposed to such topics.
- Understanding people as well as tech. As technical people, we can often be quite blinded to the problems around us and focus on the tools and technologies rather than the underlying collaborations with other people.
- Applying principles I’d learned elsewhere to my profession. I play a lot of music, and have been for over 20 years; as such, the idea of deliberate practice is quite a familiar one to me, and applying this principle to the techniques used in software development made a lot of sense. Participating in and organising things like Dojos and Code Retreats has helped me understand and improve my own development process enormously.
#2. WHAT CHALLENGES WILL THE PARTICIPANTS FIND SOLUTIONS TO DURING YOUR SESSIONS @ I T.A.K.E UNCONFERENCE 2016?
#3. WHAT ELSE WOULD YOU LIKE TO SHARE WITH PARTICIPANTS?
Enjoy the following series of interviews with the speakers, top-notch software crafters from across Europe, joining I T.A.K.E Unconference, Bucharest, 11-12 May. Discover the lessons learned and what drives them to challenge the known path in their field.
#1. Please share with us 5 things you did that helped you grow & become the professional you are today
1. The biggest thing I did that changed me was a Journeyman Tour. For three months I visited different companies in Vienna and paired with their developers. See here for more information. (Three Month Journeyman Tour)
2. This included a lot of pair programming with strangers. I like pair programming and make use of it to learn from others. (Pair Programming)
3. I did (and still do) a lot of Code Katas to practice and experiment with code, patterns, and design. (Code Katas)
4. Try to continuously improve.
5. Read technical books.
#2. What challenges will the participants find solutions to during your session at I T.A.K.E Unconference 2017?
Yes, my session, the Brutal Coding Constraints, is a real challenge. It challenges our perception of Object Orientation and aims to deepen our understanding.
#3. Recommend for the participants 3 sources you find inspiration from and would help them better understand you
* Michael Feathers – The Deep Synergy Between Testability and Good Design
* Bryan Liles – TATFT – Test All the F…in Time
* J.B. Rainsberger – The Worlds Best Introduction to TDD
Want to join Peter and ~300 software crafters from around Europe?
Register now for I T.A.K.E Unconference 2017!