May 13, 2022
Property-based testing is for people who do not like to write unit tests. Instead of providing examples, you provide a fact that should hold true for any possible input, and let the test framework, fast-check in this case, generate random inputs for you.
In this live demo session, Jan shows how to use this for even more complex UI testing with a TodoMVC that uses React Hooks.
Presenter: Jan van Brügge
May 13, 2022
Property-based testing is for people who do not like to write unit tests. Instead of providing examples, you provide a fact that should hold true for any possible input, and let the test framework, fast-check in this case, generate random inputs for you.
In this live demo session, Jan shows how to use this for even more complex UI testing with a TodoMVC that uses React Hooks.
Presenter: Jan van Brügge
April 28, 2022
Many developers are interested in Security. Yet, they often seem to struggle to get security efforts into their product roadmaps. With security and development silos still very much present in the organisations, where do we start?
Worry no more! Luisa Emme has 3 tips for you that she shares in this talk, with some stories and anecdotes from her past experiences.
They have not only proven effective in introducing Developer-Driven Security in agile teams, but also been successful in influencing a DevSec culture in medium sized organisations.
Presenter: Luisa Emme
April 28, 2022
Many developers are interested in Security. Yet, they often seem to struggle to get security efforts into their product roadmaps. With security and development silos still very much present in the organisations, where do we start?
Worry no more! Luisa Emme has 3 tips for you that she shares in this talk, with some stories and anecdotes from her past experiences.
They have not only proven effective in introducing Developer-Driven Security in agile teams, but also been successful in influencing a DevSec culture in medium sized organisations.
Presenter: Luisa Emme
November 12, 2021
While many languages support laziness in some form, be it by explicit data types or generators, it is not one of the best understood features. In this live coding session, Jan shows you how to solve FizzBuzz using laziness and without any "x divides y" checks – first using Haskell, which is lazy by default, and then we will adapt the solution to work in other languages.
Presenter: Jan van Brügge
November 12, 2021
While many languages support laziness in some form, be it by explicit data types or generators, it is not one of the best understood features. In this live coding session, Jan shows you how to solve FizzBuzz using laziness and without any "x divides y" checks – first using Haskell, which is lazy by default, and then we will adapt the solution to work in other languages.
Presenter: Jan van Brügge
November 5, 2021
Juha-Matti Santala's (Juhis) personal website was built with Eleventy. And over time, he has added functionality and workflow improvements with Ghost Headless CMS and serverless Netlify Functions. It's as messy as real-life side-projects come and in this session he shares the details of the techstack, flow, and observations from using these different tools together to build a fast static website with an enjoyable blog-writing experience.
Presenter: Juha-Matti Santala
November 5, 2021
Juha-Matti Santala's (Juhis) personal website was built with Eleventy. And over time, he has added functionality and workflow improvements with Ghost Headless CMS and serverless Netlify Functions. It's as messy as real-life side-projects come and in this session he shares the details of the techstack, flow, and observations from using these different tools together to build a fast static website with an enjoyable blog-writing experience.
Presenter: Juha-Matti Santala
October 27, 2021
The modern de facto solution to identity management is OpenID Connect. OIDC and OAuth2 come with their own problems though. The intention of this session is to look at some of the problems these frameworks bring, to look at some alternatives to OpenID for identity in your applications and what kinds of cases they might be applicable in.
Presenter: Mikael Viitaniemi
October 27, 2021
The modern de facto solution to identity management is OpenID Connect. OIDC and OAuth2 come with their own problems though. The intention of this session is to look at some of the problems these frameworks bring, to look at some alternatives to OpenID for identity in your applications and what kinds of cases they might be applicable in.
Presenter: Mikael Viitaniemi
July 9, 2021
Many programming languages have collected a variety of features or idioms over the years.
For example, Python has List comprehensions. JavaScript and Kotlin have Optional chaining. Both JavaScript and Rust have async/await. In GO, it is normal to check if err != nil among others.
But if you take a step back, the fact is that all those features are the same thing! This is the power of fundamental abstractions.
Presenter: Jan van Brügge
July 9, 2021
Many programming languages have collected a variety of features or idioms over the years.
For example, Python has List comprehensions. JavaScript and Kotlin have Optional chaining. Both JavaScript and Rust have async/await. In GO, it is normal to check if err != nil among others.
But if you take a step back, the fact is that all those features are the same thing! This is the power of fundamental abstractions.
Presenter: Jan van Brügge
![A beginners guide to OpenID Connect]()
July 2, 2021
Lessons Learned from moving futuLog to Okta
In 2020, we built futuLog, an internal tool to help us manage the office usage during the pandemic. With futuLog, employees can book a slot at the office to make sure they'll have space with the pandemic restrictions.
We decided early on that eventually we want to open source futuLog. But making something open source takes more than just changing the repository to public. What use would futuLog be to others if it required Futurice infrastructure to actually run?
For instance, to build futuLog quickly we used playswarm, an internal environment that takes care of authentication and hosting. While the hosting part is easy, having single sign on for all Futurice employees is not.
So as a step towards open sourcing it, Jan spent the last month implementing and debugging the OpenID connect protocol that allows futuLog to talk to Okta and similar identity services directly. This talk is a collection of lessons learned in the journey that took Jan from knowing nothing about OpenID, to deploying it to production.
Presenter: Jan van Brügge
![A beginners guide to OpenID Connect (Audio Only)]()
July 2, 2021
Lessons Learned from moving futuLog to Okta
In 2020, we built futuLog, an internal tool to help us manage the office usage during the pandemic. With futuLog, employees can book a slot at the office to make sure they'll have space with the pandemic restrictions.
We decided early on that eventually we want to open source futuLog. But making something open source takes more than just changing the repository to public. What use would futuLog be to others if it required Futurice infrastructure to actually run?
For instance, to build futuLog quickly we used playswarm, an internal environment that takes care of authentication and hosting. While the hosting part is easy, having single sign on for all Futurice employees is not.
So as a step towards open sourcing it, Jan spent the last month implementing and debugging the OpenID connect protocol that allows futuLog to talk to Okta and similar identity services directly. This talk is a collection of lessons learned in the journey that took Jan from knowing nothing about OpenID, to deploying it to production.
Presenter: Jan van Brügge
June 18, 2021
Serverless has become the buzzword of the recent years.
Most people think of Lambda when hearing Serverless. But Lambdas are literally just a tiny part in that field. Who would have thought that a tiny function goes big and become a crucial part of Software Development!
This talk reveals what you are capable of while using AWS Lambda, the Serverless Compute Service of Amazon. We will determine some architectural approaches such as Microservices, Monolith, or ETL/ELT, and try to answer whether you can do Machine Learning with Lambdas.
Presenter: John Nguyen
June 18, 2021
Serverless has become the buzzword of the recent years.
Most people think of Lambda when hearing Serverless. But Lambdas are literally just a tiny part in that field. Who would have thought that a tiny function goes big and become a crucial part of Software Development!
This talk reveals what you are capable of while using AWS Lambda, the Serverless Compute Service of Amazon. We will determine some architectural approaches such as Microservices, Monolith, or ETL/ELT, and try to answer whether you can do Machine Learning with Lambdas.
Presenter: John Nguyen
May 13, 2021
"Parse, don't validate" is an approach to modeling data such that it is impossible to construct without verifying the integrity of the data first. Thus when using such data, one can be sure that it is already in the correct shape and no further validation is necessary.
In short, this approach makes it explicit where your data gets refined. This blog by Alexis King uses examples in Haskell, mostly because the language has a short and concise syntax. To show that such an approach works in any other language too (albeit with a bit more boilerplate approach), Jan will also demonstrate it in Java.
Presenter: Jan van Brügge
May 13, 2021
"Parse, don't validate" is an approach to modeling data such that it is impossible to construct without verifying the integrity of the data first. Thus when using such data, one can be sure that it is already in the correct shape and no further validation is necessary.
In short, this approach makes it explicit where your data gets refined. This blog by Alexis King uses examples in Haskell, mostly because the language has a short and concise syntax. To show that such an approach works in any other language too (albeit with a bit more boilerplate approach), Jan will also demonstrate it in Java.
Presenter: Jan van Brügge
May 6, 2021
In this edition of Tech Weeklies, Olavi shares his learnings from creating and maintaining a Sailfish OS app for tracking working hours, called Working Hours Tracker. It was a project he started in 2014 and has been developing and maintaining it ever since. The most recent version of the app was released in February 2021.
At the time of starting this project, Olavi had been studying for a few years, and had little real world experience in software projects. As we all know, most of the learning happens at work or when doing some side projects. His limited experience and knowledge led to some of the interesting mistakes made during the project. This talk covers some of those mistakes and the lessons he learned from them.
Presenter: Olavi Haapala
May 6, 2021
In this edition of Tech Weeklies, Olavi shares his learnings from creating and maintaining a Sailfish OS app for tracking working hours, called Working Hours Tracker. It was a project he started in 2014 and has been developing and maintaining it ever since. The most recent version of the app was released in February 2021.
At the time of starting this project, Olavi had been studying for a few years, and had little real world experience in software projects. As we all know, most of the learning happens at work or when doing some side projects. His limited experience and knowledge led to some of the interesting mistakes made during the project. This talk covers some of those mistakes and the lessons he learned from them.
Presenter: Olavi Haapala
