.NET Fest 2018. Dylan Beattie. Ctrl-Alt-Del: Learning to Love Legacy Code
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.NET Fest 2018. Dylan Beattie. Ctrl-Alt-Del: Learning to Love Legacy Code
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The world runs on legacy code. For every greenfield progressive web app with 100% test coverage, there are literally hundreds of archaic line-of-business applications running in production - systems with no tests, no documentation, built using out-of-date tools, languages and platforms. It’s the code developers love to hate: it’s not exciting, it’s not shiny, and it won’t look good on your CV - but the world runs on legacy code, and, as developers, if we’re going to work on anything that actually matters, we’re going to end up dealing with legacy. To work effectively with this kind of system, we need to answer some fundamental questions: why was it built this way in the first place? What's happened over the years it's been running in production? And, most importantly, how can we develop our understanding of legacy codebases to the point where we're confident that we can add features, fix bugs and improve performance without making things worse?
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.NET Fest 2018. Dylan Beattie. Ctrl-Alt-Del: Learning to Love Legacy Code
- Ctrl-Alt-Delete Learning to Love Legacy Code t WITH PASSION TO TECHNOLOGY .NET CONFERENCE #1 IN UKRAINE, KYIV 2018 Dylan Beattie @dylanbeattie
- Ctrl-Alt-Delete Learning to Love Legacy Code t WITH PASSION TO TECHNOLOGY .NET CONFERENCE #1 IN UKRAINE, KYIV 2018 Dylan Beattie @dylanbeattie
- @dylanbeattie • Building websites since 1992 • CTO @SkillsMatter • London .NET User Group • www.dylanbeattie.net • dylan@dylanbeattie.net
- https://www.reddit.com/r/ProgrammerHumor/comments/58lzgc/legacy_code/
- https://github.com/dotnet/BenchmarkDotNet/src/BenchmarkDotNet/Extensions/ReflectionExtensions.cs
- "Legacy code is simply code without tests" - Michael Feathers
- Legacy Code: "Code that's too scary to update and too profitable to delete" https://twitter.com/jbrains/status/998951712546279424
- http://oldschoolfrp.tumblr.com/image/101938448668
- Serverless F# microservices ASP.NET with 'some tests' Visual Basic 6 on Windows XP Excel Spreadsheets
- RESUMÉ • Angular (3 months) • Blazor (6 months) • WebAssembly (3 days) • Rust (4 weeks) • Kotlin (2 weeks) • Elm (10 minutes) RESUMÉ • C# (15 years) • SQL Server (25 years) • HTML (20 years)
- TRUST CONTROL UNDERSTANDING
- Hamlet Moby Dick The Brothers Karamazov The Lord of the Rings Atlas Shrugged War and Peace Linux Kernel Mono Lines Lines
- Hamlet Moby Dick The Brothers Karamazov The Lord of the Rings Atlas Shrugged War and Peace Linux Kernel Mono Lines Lines
- Observation Hypothesis Prediction Experiment Analysis Communication
- # /etc/hosts 127.0.0.1 api.payments.mycompany.com 127.0.0.1 mail.mycompany.com 127.0.0.1 stockcontrol.mycompany.com
- IT HAS BEEN DAYS SINCE OUR LAST LEGACY CODE INCIDENT 29
- OUR DEFINITION OF "DONE" qCode deleted qGitHub repos archived qDatabases offlined qServers decommissioned qTeam at the beach qDrinking beer
- Ctrl-Alt-Delete Learning to Love Legacy Code t WITH PASSION TO TECHNOLOGY .NET CONFERENCE #1 IN UKRAINE, KYIV 2018 Dylan Beattie @dylanbeattie