{"id":3365,"date":"2025-11-27T12:50:42","date_gmt":"2025-11-27T11:50:42","guid":{"rendered":"https:\/\/www.xenonique.co.uk\/blog\/?p=3365"},"modified":"2025-11-28T18:36:49","modified_gmt":"2025-11-28T17:36:49","slug":"webinar-re-recorded-taming-complexity-functional-error-handling-with-arrow-kt-november-2025","status":"publish","type":"post","link":"https:\/\/www.xenonique.co.uk\/blog\/2025\/11\/27\/webinar-re-recorded-taming-complexity-functional-error-handling-with-arrow-kt-november-2025\/","title":{"rendered":"Webinar Re-recorded: Taming Complexity: Functional Error Handling with Arrow.kt November 2025"},"content":{"rendered":"\n<p>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.<\/p>\n\n\n\n<p>YouTube &#8211; 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>\n\n\n\n<p><\/p>\n\n\n\n<p> <iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/ggXZF1AJM-s?si=-ut0TvZ_2b4xa3o_\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen=\"\"> <\/p><\/iframe><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>Arrow<\/strong> is handy tool in your FP toolbox that I help teams understand and apply correctly in my coaching.<\/p>\n\n\n\n<p>This presentation demonstrates:<\/p>\n\n\n\n<ul><li>How to move from hidden failures \u2192 nullable results \u2192 fully typed outcomes=<\/li><li>The type signature <code>Either&lt;String, Double&gt;<\/code> tells the whole story &#8211; 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&lt;E, A&gt;<\/code> <\/li><\/ul>\n\n\n\n<p>Thoughts? comments? I will accept your feedback graciously, especially please reached for <strong>Java Tech Coaching<\/strong> for yourself or your teams.<\/p>\n\n\n\n<p>Please find the <a href=\"https:\/\/github.com\/peterpilgrim\/arrowkt-webinar-2025\/tree\/main\/src\/docs\">Slide deck (PDF) here<\/a><\/p>\n\n\n\n<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>\n\n\n\n<p> <\/p>\n\n\n\n<p>Peter Pilgrim, +PP+, November 2025<\/p>\n\n\n\n<p><\/p>\n\n\n\n<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>\n\n\n\n<p><\/p>\n\n\n\n<p> <\/p>\n","protected":false},"excerpt":{"rendered":"<p>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 &#8211; 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 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[72,78,4,212,44,40,178],"tags":[343,348,344,235,234,237,346,347],"_links":{"self":[{"href":"https:\/\/www.xenonique.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3365"}],"collection":[{"href":"https:\/\/www.xenonique.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xenonique.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xenonique.co.uk\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xenonique.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=3365"}],"version-history":[{"count":6,"href":"https:\/\/www.xenonique.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3365\/revisions"}],"predecessor-version":[{"id":3373,"href":"https:\/\/www.xenonique.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3365\/revisions\/3373"}],"wp:attachment":[{"href":"https:\/\/www.xenonique.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=3365"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xenonique.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=3365"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xenonique.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=3365"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}