Talks Tulio Paschoalin Leao – Software Engineering Manager October 28th, 2021 Tackling Technical Debt: Hello Junior Developers!© 2021 Cadence Design Systems, Inc. All rights reserved. 2 Photo by Susan Design Systems, Inc. All rights reserved. 6 Senior Devs Junior Devs Key Concepts • Technical Debt • Resource Allocation “Free time” Knowledge© 2021 Cadence Design Systems, Inc. All rights reserved

it may not be in a consistent state, but it is a bug for a client to contradict itself.Technical debt is quantifiable as financial debtMeir M Lehman Programs, life cycles, and laws of software evolution html Technical Debt is a wonderful metaphor developed by Ward Cunningham to help us think about this problem.Martin Fowler martinfowler.com/bliki/TechnicalDebt.html Like a financial debt, the technical technical debt incurs interest payments, which come in the form of the extra effort that we have to do in future development because of the quick and dirty design choice.Martin Fowler martinfowler.com/bliki/TechnicalDebt

Technical Debt RELEASE TO MARKET RELEASE TO MARKET Months to Years Cost Multiple Iterative Releases Time VALUE Days to Weeks Technical Debt OPPORTUNITY

vulnerabilities are introduced ❖ All new security hotspots are reviewed ❖ New code has limited technical debt ❖ New code has limited duplication ❖ New code is properly covered by testsContinuous Testing certified (3rd party vendors), ... ❖ What can help: ➢ Modular and decoupled architecture, Frequent tech debt reviews, Security/Compliance tracking, Established testing framework for upgrades, Proper dependency

1971 - is very close to the published form of the paper which was submitted on 16 February 1972. The debt, among others, to Milner's work is acknowleged but the paper here presents the proof method much pair& e); };© 2023 Adobe. All Rights Reserved. Contracts | The Reckoning 120 // A collection of T, U pairs whose first // elements are stored in one vector and // second elements in a + p)) }; ... };© 2023 Adobe. All Rights Reserved. Contracts | The Reckoning 122 // A collection of T, U pairs whose first // elements are stored in one vector and // second elements in a

Refactoring Upgrading Migrating Debugging Adding tests Writing documentation Resolving technical debt “The only constant in life is change.” - Heraclitus5 Aurora Innovation Types of Change Fixing a accountability for software quality. reward continuous improvements and actively share about technical debt. Commitment Teams need to commit to continued investment in maintaining software quality and continuously

about… Discuss & implement Better ways Ensure Simplicity Enable Evolution Address Technical Debt Evaluate more options!High- Ownership Functional Knowledge Code Awareness Code Familiarity

• “This is a proxy, this is a memoized fetcher, this is a façade…” • How do we define technical debt? • Today: entropy created in order to deliver something quickly • Tomorrow: entropy that is difficult

the exercise sheet, and love06 _ monads_homework_sheet.lean is the homework sheet. We have a huge debt to the authors of Theorem Proving in Lean [1] and Concrete Semantics: With Isabelle/HOL [27], who

improved application performance. See the Improve Your Application’s Performance for how to do this. Collection • Added unique() which filters out duplicate value specified by provided callback. • reject() CakePHP’s models are composed of Table and Entity objects. Table objects provide access to the collection of entities stored in a specific table. They are stored in src/Model/Table. The file we’ll be creating add this use statement right below the namespace declaration to import // the Collection class use Cake\Collection\Collection; // Update the accessible property to contain `tag_string` protected array $_accessible