Peter Kofler is a software developer and code mentor who helps development teams improve code quality through mentoring techniques like pair programming and coding dojos. The document summarizes Object-Oriented Programming concepts like abstraction, encapsulation, polymorphism, and inheritance. It also describes "Object Calisthenics" rules for writing high-quality object-oriented code, such as wrapping primitives, short methods, and avoiding getters/setters. The agenda involves a discussion of OOP concepts and a coding exercise on implementing LCD number display following the Object Calisthenics rules.
A Leaderboard shows score of each team. Commit and push green increments to score points. Repeat: Push as often as possible! Try to perform maximum number of smallest steps and test runs.
Deliberate Practice, New Learning Styles (2015)Peter Kofler
Presentation about Deliberate Practice at the Austrian Testing Board "Expertentreff". This covers the Software Crisis, Developing Quality Software Developers and the mechanisms of Code Katas, Coding Dojos and Code Retreats.
Outside-in Test Driven Development - the London School of TDDPeter Kofler
Workshop slides for "Outside-in Test Driven Development - die Londoner Schule des TDD" @ Software Quality Days 2019.
In Outside-In (London school, top-down or "mockist TDD") you build the system from the "outside-in", following the user interaction through all the parts of the system. You start with the interactions and collaborators upfront (especially those at top levels), mocking necessary dependencies (or creating fake implementations). With every finished component, you move to the previously mocked collaborators and start with TDD again there, creating actual implementations (which, even though used, were not needed before thanks to abstractions).
Coding Dojo with focus on naming. Rules of the dojo are Pair Programming & TDD. Constraints are challenges during the dojo. Moving to the extreme is a way of learning. We are coding the game of Tic-Tac-Toe and everything - but the names of test methods - is named using random dices. Specifically using these random dices with enterprise-y useless names.
A Leaderboard shows score of each team. Commit and push green increments to score points. Repeat: Push as often as possible! Try to perform maximum number of smallest steps and test runs.
Deliberate Practice, New Learning Styles (2015)Peter Kofler
Presentation about Deliberate Practice at the Austrian Testing Board "Expertentreff". This covers the Software Crisis, Developing Quality Software Developers and the mechanisms of Code Katas, Coding Dojos and Code Retreats.
Outside-in Test Driven Development - the London School of TDDPeter Kofler
Workshop slides for "Outside-in Test Driven Development - die Londoner Schule des TDD" @ Software Quality Days 2019.
In Outside-In (London school, top-down or "mockist TDD") you build the system from the "outside-in", following the user interaction through all the parts of the system. You start with the interactions and collaborators upfront (especially those at top levels), mocking necessary dependencies (or creating fake implementations). With every finished component, you move to the previously mocked collaborators and start with TDD again there, creating actual implementations (which, even though used, were not needed before thanks to abstractions).
Coding Dojo with focus on naming. Rules of the dojo are Pair Programming & TDD. Constraints are challenges during the dojo. Moving to the extreme is a way of learning. We are coding the game of Tic-Tac-Toe and everything - but the names of test methods - is named using random dices. Specifically using these random dices with enterprise-y useless names.
Pragmatic Introduction to Python Unit Testing (PyDays 2018)Peter Kofler
We will start with a few best practises for unit testing followed by an interactive, hands-on tour through the main features of Python unit testing framework(s). You will learn while writing tests.
Clean Code Part III - Craftsmanship at SoCal Code CampTheo Jungeblut
When building a house, good architecture and craftsmanship together form the needed crucial elements for success. The same pattern applies to software development. As the previous sessions focused on the architectural part of software development, this session will strongly focus on often forgotten but very important areas of coding.
You will learn why naming is really difficult if done right, why coding and style guidelines are crucial, code structuring, exception handling and why other elements of coding often define the tipping point between success and failure of projects. Following the principles of software craftsmanship will allow you to end up with better maintainability and extensibility of your software and the success of the project in the end.
All 3 Clean Code presentations provide great value by themselves, but taken together are designed to offer a holistic approach to successful software creation.
Why writing Clean Code makes us more efficient
Over the lifetime of a product, maintaining the product is actually one - if not the most - expensive area(s) of the overall product costs. Writing clean code can significantly lower these costs. However, writing clean code also makes you more efficient during the initial development time and results in more stable code. You will be presented design patterns and best practices which will make you write better and more easily maintainable code, seeing code in a holistic way. You will learn how to apply them by using an existing implementation as the starting point of the presentation. Finally, patterns & practices benefits are explained.
This presentation is based on C# and Visual Studio 2010. However, the demonstrated patterns and practice can be applied to every other programming language too.
Similar to Coding Dojo Object Calisthenics (2016) (16)
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Enhancing Performance with Globus and the Science DMZGlobus
ESnet has led the way in helping national facilities—and many other institutions in the research community—configure Science DMZs and troubleshoot network issues to maximize data transfer performance. In this talk we will present a summary of approaches and tips for getting the most out of your network infrastructure using Globus Connect Server.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
Observability Concepts EVERY Developer Should Know -- DeveloperWeek Europe.pdfPaige Cruz
Monitoring and observability aren’t traditionally found in software curriculums and many of us cobble this knowledge together from whatever vendor or ecosystem we were first introduced to and whatever is a part of your current company’s observability stack.
While the dev and ops silo continues to crumble….many organizations still relegate monitoring & observability as the purview of ops, infra and SRE teams. This is a mistake - achieving a highly observable system requires collaboration up and down the stack.
I, a former op, would like to extend an invitation to all application developers to join the observability party will share these foundational concepts to build on:
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...SOFTTECHHUB
The choice of an operating system plays a pivotal role in shaping our computing experience. For decades, Microsoft's Windows has dominated the market, offering a familiar and widely adopted platform for personal and professional use. However, as technological advancements continue to push the boundaries of innovation, alternative operating systems have emerged, challenging the status quo and offering users a fresh perspective on computing.
One such alternative that has garnered significant attention and acclaim is Nitrux Linux 3.5.0, a sleek, powerful, and user-friendly Linux distribution that promises to redefine the way we interact with our devices. With its focus on performance, security, and customization, Nitrux Linux presents a compelling case for those seeking to break free from the constraints of proprietary software and embrace the freedom and flexibility of open-source computing.
2. Peter Kofler
• Ph.D. (Appl. Math.)
• Professional Software
Developer for 15+ years
• “fanatic about code quality”
• Freelance Code Mentor
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
3. I help development teams with
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
●
Professionalism
●
Quality and
Productivity
●
Continuous
Improvement
4. Mentoring
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
●
Pair Programming
●
Programming
Workshops
●
Deliberate
Practice, e.g.
Coding Dojos
7. Discussion
●
What is Object Orientation?
●
What are its
basic features?
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
8. OOP is based on
●
Abstraction
●
Encapsulation
●
Polymorphy
●
Inheritance
●
Coupling
●
Cohesion
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
9. Abstraction
●
“A class should capture one and only
one key abstraction.”
●
Avoid Primitive Obsession.
●
Single Responsibility Principle (SRP).
●
Wrap All Primitives And Strings. (OC#3)
●
First Class Collections. (OC#4)
●
Keep All Entities Small. (OC#7)
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
10. Encapsulation
●
“Objects are defined by what they do, not
what they contain.“
●
All data should be hidden within its class.
●
Tell, Don't Ask.
●
e.g.
●
All fields must be private.
●
No Getters/Setters/Properties. (OC#9)
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
11. Polymorphy
●
Avoid switch statements (Type Code).
●
“Explicit case on the type of an object
(instanceof) is usually an error.”
●
Open Closed Principle (OCP).
●
e.g.
●
Avoid switch statements.
●
Don’t Use The else Keyword. (OC#2)
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
12. Inheritance
●
„Inheritance should only be used to
model a specialization hierarchy.“
●
“IS A ...“ vs. „HAS A ...“ means the
subclass “IS exactly the same AS …”
●
Inheritance hierarchies should be
shallow. (2-3)
●
See Liskov Substitution Principle (LSP).
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
14. Low Coupling
●
“Minimize the number of classes with which
another class collaborates.“
●
“Minimize the number of messages sent
between a class and its collaborator.“
●
Law of Demeter (“Only talk to friends”).
●
See Interface Segregation Principle (ISP).
●
e.g.
●
One Dot (dereference) Per Line. (OC#5)
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
15. High Cohesion
●
“Most of the methods defined on a class
should be using most of the data members
most of the time.“
●
Related data and behaviour in one place.
●
e.g.
●
Don’t Abbreviate (long names). (OC#6)
●
Keep All Entities Small. (OC#7)
●
Max Two Instance Variables. (OC#8)
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
16. Jeff Bay's Object Calisthenics
1. Only One Level Of Indentation Per Method.
2. Don’t Use The else Keyword.
3. Wrap All Primitives And Strings.
4. First Class Collections.
5. One Dot/Arrow (dereference) Per Line.
6. Don’t Abbreviate (long names).
7. Keep All Entities Small. (50 LoC per class)
8. Not More Than Two Instance Variables.
9. No Getters/Setters/Properties.
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
18. Coding Dojo Mindset
●
Safe place outside
work
●
We are here to learn
●
Need to slow down
●
Focus on doing it right
●
Collaborative Game
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
20. Pair Programming & TDD
●
regular Pair Programming
●
do not talk for too long
●
do not interrupt the other
●
no “keyboard hugging“
●
use TDD (or at least “sort of” TDD)
●
write a test before you write code
●
refactor mercilessly
●
no debugger
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
22. Assignment
● Create an LCD string representation of an integer value using
a 4x7 grid of space, minus and pipe characters for each digit.
● Each digit is shown below (dot instead of space)
.--......--..--......--..--..--..--..--.
|..|...|...|...||..||...|......||..||..|
|..|...|...|...||..||...|......||..||..|
.........--..--..--..--..--......--..--.
|..|...||......|...|...||..|...||..|...|
|..|...||......|...|...||..|...||..|...|
.--......--..--......--..--......--..--.
● Bar size should be adjustable. The default value is 2.
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
24. Jeff Bay's Object Calisthenics
1. Only One Level Of Indentation Per Method.
2. Don’t Use The else Keyword.
3. Wrap All Primitives And Strings.
4. First Class Collections.
5. One Dot/Arrow (dereference) Per Line.
6. Don’t Abbreviate (long names).
7. Keep All Entities Small. (50 LoC per class)
8. Not More Than Two Instance Variables.
9. No Getters/Setters/Properties.
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
25. Prepare
●
Find a pair.
●
Choose a programming language.
●
Get the Java project or create new one.
●
Implement LCD Numbers.
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
28. Closing Circle
●
What did you learn today?
●
What surprised you today?
●
What will you do
differently in the
future?
PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY