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Webinar Re-recorded: Taming Complexity: Functional Error Handling with Arrow.kt November 2025

27 November 2025 No comments

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2 minutes

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227

Here is my presentation webinar on the Arrow Core for experienced Java developers, who are unfamiliar with functional programming (FP) and also migrating from Java to Kotlin.

YouTube – I am a technical leader / principal engineer. It is part of daily duty to improve the working lives of software developers in teams, especially where I am accountable for the efficiency and productivity.

</p> <p></p> <p><strong>Arrow</strong> is handy tool in your FP toolbox that I help teams understand and apply correctly in my coaching.</p> <p>This presentation demonstrates:</p> <ul><li>How to move from hidden failures → nullable results → fully typed outcomes=</li><li>The type signature <code>Either<String, Double></code> tells the whole story – it can succeed with a Double or fail with a String message</li><li>I help Java teams make exactly this kind of mindset shift in my coaching</li><li>If you are brave enough I also touch the tricky subject of <code>Ior<E, A></code> </li></ul> <p>Thoughts? comments? I will accept your feedback graciously, especially please reached for <strong>Java Tech Coaching</strong> for yourself or your teams.</p> <p>Please find the <a href="https://github.com/peterpilgrim/arrowkt-webinar-2025/tree/main/src/docs">Slide deck (PDF) here</a></p> <p>Please find the source code for this Webinar in the <a href="https://github.com/peterpilgrim/arrowkt-webinar-2025">arrowkt-webinar-2025 Github repository</a>.</p> <p> </p> <p>Peter Pilgrim, +PP+, November 2025</p> <p></p> <p>Coda: What did I learn? Use much better streaming technology. Setup a secure and psychological safe event meeting environment for developers who are really interested in computer programming. See you at the next event.</p> <p></p> <p> </p> <div class="fixed"></div> </div> </div> <footer> <div class="under"> </div> <a name="comments" ></a> <div id="disqus_thread"></div> </footer> </article> <div class="lead content-promotion centered"> Hey all! Thanks for visiting. I provide fringe benefits to interested readers: checkout <a href="https://www.xenonique.co.uk/consultancy/">consultancy</a>, <a href="https://www.xenonique.co.uk/training/">training</a> or <a href="https://www.xenonique.co.uk/mentorship/">mentorship</a> Please make enquiries <a href="mail:peter.pilgrim@gmail.com">by email</a> or <br class="soft-break">call <strong>+44 (0)7397 067 658</strong>. <p class="small-print"> Due to the <a href="https://www.gov.uk/government/publications/off-payroll-working-in-the-public-sector-reform-of-the-intermediaries-legislation-technical-note/off-payroll-working-in-the-public-sector-reform-of-the-intermediaries-legislation-technical-note"> <strong>Off-Payroll Working</strong> </a> plan for the UK government, I am enforcing stricter measures on contracts. 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Peter Pilgrim :: Java Champion :: Digital Developer Architect

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Webinar Re-recorded: Taming Complexity: Functional Error Handling with Arrow.kt November 2025

YOUR JAVA TECH COACH Plan | Create | Deliver

3-Session Junior Developer Coaching Plan

YOUR JAVA TECH COACH
Plan | Create | Deliver