ClojureD Notes

Now called ClojureU

Talks

Automated Testing

Paulus Esterhazy

• Festina lente
• How you manage complexity dictates how long future development will happen.
• Developing microtests is one way to help manage complexity
• End-to-end tests are very dangerous!
• developing microtests is a form of conversational development
  • having a fast feedback loop is key to improve code thus decreasing complexity
• drivers of rising cost of change: brownfielding + bad design
  • changing code is harder than writing new code
  • devs spending most of the time changing code
  • therefore, making changing code easier is the solution to managing complexity
• testability correlates with modifiability

Automated Correctness Analysis for async code

Sung-Shik

• communicating sequential processes? “CSP proper is amenable to clojure but no work has been done for core.async yet”
• mistakes in async code: getting the wiring wrong (wrong results or deadlocks); logic mistakes
• automated corrected analysis (ACA) = check compliance
• ACA = program + instruments + monitoring + specification
• discourje is an instrumentation library

Let it be

Ariel Alexis

• Java errors have patterns …and so does Clojure!
• not every error has a pattern

Beginner Driven Development

• Making things easy should not be a problem. There are correct ways of making things easy though.
• “The better your code is to beginners, the better it is for everyone”
• Richie talk on simple made easy

Building Intelligible Systems

Alys Brooks

• unintelligility impacts everyone: new devs struggle to speed up; more experienced devs forget stuff, or not know everything
• at least document stuff, even if it’s bad
• data structures are nice, but it is a good idea to explain what they describe. Examples at how to explain data structures include docstrings, malli, clojure specs, generators, and the facai repo.

Code execution as data with omni-trace

Lukas Domagala

• omni-trace = homoiconic code + interactive introspection
• other similar tools include clojure.tools.trace and sayid

Using macros leads to remorse: an exercise in perversity

Paula Gearon

...---...

On Clojure Popularity

Artem Barmin from Freshcode

• idea: treat clojure not as a language, but as a package of developers experiences
• “programming languages are memes”
• pirate funnel: awareness, acquisition, activation, revenue, retention, referral