defn

We interview the famously energetic and prolific ambassador for Clojure, Mr Alex Miller

Please check the web site for the show notes:

https://defn.audio

A discussion about spec

For detailed information and links, see the show notes at

https://defn.audio/2016/09/21/episode-10-spec-ial/

Summary:

A fun, loooong episode to discuss the awesome Onyx with Mike Drogalis and Lucas Bradstreet

Show notes at https://defn.audio/2016/09/06/episode-9-onyx-with-mike-and-lucas/

Credits:

Guests: Thanks to Mike and Lucas for the great conversation and all of the lovely software.

Music: Thanks to the very talented ptzery for the permitting us to use his music on the opening and closing of the podcast. This track is Melon Hamburger. You can give his work some ❤️ and hear more on his SoundCloud https://soundcloud.com/ptzery

News & Events

https://juxt.pro/XT16.html - 6th October, 2016

Defn will be at Euroclojure - October 25/26

EuroClojure talks - David Nolen, Carin Meier etc.

https://skillsmatter.com/conferences/7430-clojure-exchange-2016

Onyx got funding

re-frame a new version

Ambrose IndieGoGo : https://www.indiegogo.com/projects/typed-clojure-clojure-spec-auto-annotations#/

Main discussion - Clojure at Scale

OOP has design patterns UML etc. OOAD

Scaling - two thingies: Static vs. Dynamic

Functional Programming without OOP Paradigms

component/mount

“Modules” or namespaces /

Distribution - fund the clojars! (https://salt.bountysource.com/teams/clojars)

Functions as first class (high-order fns, fns as return types)

Code testing/schema/spec

Team - Sizes

Micro-services / Serverless

Links

Open Source book - http://aosabook.org/en/index.html

Peter Novig on Design Patterns in LISP - http://norvig.com/design-patterns/design-patterns.pdf

Fred George on Programmer Anarchy https://www.youtube.com/results?search_query=fred+george+programmer+anarchy

Docker and Unikernels

https://blog.docker.com/2016/01/unikernel/

Credits

Thanks to Ptzery for intro / outro … Melon Hamburger

https://soundcloud.com/ptzery

A roving tour of Datomic with the pioneering Mr Stuttaford.

For detailed show notes please check the web site

https://defn.audio/2016/08/10/episode-7-datomic-with-robert-stuttaford/

A rambling discussion struggling to come to terms with concurrency and parallelism

See the show notes at defn.audio

https://defn.audio/2016/07/25/episode-6-concurrency-and-parallelism/

*Follow up*

We retain our status as the top vegetarian Clojure podcast. Phew.

Maria Geller’s video - in which she did a great job of explaining how the CLJS compiler works and provides some interface to the contribution process:

https://www.youtube.com/watch?v=Elg17s_nwDg

*News*

Euro Clojure - Bratislava tickets are on sale. Defn will be there

*Main discussion - ClojureScript UI - Hoplon Special*

http://hoplon.io

Welcome to Micha Niskin - co-author of the awesome Hoplon library collection

Potted history of Micha and the main goals of Hoplon

Hoplon - LISP based DOM manipulation

Javelin - Spreadsheet data flow model

Castra - CQRS, RPC

Comparison to React / Rum / Reagent

*Credits*

Special Guest: Micha Niskin. Thanks Micha and please look after those nukes.

Music: Thanks to the very talented ptzery for the permitting us to use his music on the opening and closing of the podcast. This track is Melon Hamburger. You can give his work some ❤️ and hear more on his SoundCloud.

Overview of Persistent Collections

- Intro | Follow-up | News

- Discussion on community relations

- Immutable Persistent Collections

List vs Vector

- Linked list vs tree implementation

Map vs Set

- Key can be anything

- KV | Unique KV

- Relational operations on set are outside of core

Seq library

- ISeq (first, rest, cons)

- Interop with Java utterable

- Functions are written to work against the Seq interface

- Seq in, Seq out

Immutability and Persistence

- What is it?

- Why is it important?

- Implementation

Lazy collections

- What does it mean to be lazy?

- What does it mean to hold on the head?

Eager operations

- Sometimes you need side effects so you cannot be lazy

- Doall, doseq

Persistent vs. Transient

- Performance

SPECTER - Nathan Marz

- Ensure output format of collection operations is controlled

- Editing operations

Community contributed collections - shout out to

- Chris Houser - Data.zip

- Michał Marczyk - Ctries and AVL

- Mark Engelberg - Priority maps

- Lean Hash Maps Peter Schuck

See the podcast web site http://defn.audio for links

This episode we welcome Mr Mike Fikes to help us on a tour of the Clojure REPLs

Defn Episode #02 - The Reader

[ a little news: spec ]

The wonders of the Reader

- Compare to the C pre-processor

- How it underpins the language

- Reader forms

- EDN / Transit

- Tagged literals

- Reader Conditionals (1.7+)

- clojure.tools.reader

- Finally, why no user defined reader macros (as in Common Lisp and Scheme)?

References

The Data-Reader's Guide to the Galaxy (Clojure West, 2013) by Steve Miner

Spyscope by David Greenberg

More information and links at the DEFN website

https://defn.audio/2016/05/30/episode-02-the-reader/

Our thanks to Ptzery for the intro and outro music (Melon Hamburger)

https://soundcloud.com/ptzery/