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Squeak & Pharo @ NYC Smalltalk
- 1. Why Smalltalk? I made up the term “object-oriented,” and I can tell you I did not have C++ in mind. – Alan Kay
- 2. Live environment code spread around files e.g. Ruby Includes external and system code http://frank.itlab.us/photo_essays/wrapper.php?dec_27_2006_bridge.html
- 3. Turtles all the way down System objects are accessible! Fix it yourself Understand how things work See how the masters code William Warby http://www.flickr.com/photos/26782864@N00/2499825928/
- 4. Simple
- 5. Everything is right in front of you VS. A Library of C++ Gotcha Books 1. One tutorial 2. One style guide
- 6. No mental context switching at the system level Mac OS X Cocoa “Fundamentals” VS Live objects
- 7. No mental context switching at the language level C++ Libraries VS Sending Messages to objects
- 8. Documentation Ideally part of the system itself Squeak/Pharo – still a work in progress
- 10. License “Do what you want, just please don’t sue us” (MIT, paraphrased) http://www.flickr.com/photos/knile/2775149207/sizes/o/
- 11. Really turtles all the way down to the operating system out of the box can extend down to the metal e.g. SqueakNOS An operating system is a collection of things that don't fit into a language. There shouldn't be one. - Dan Ingalls
- 12. Community IRC - #pharo-project and #squeak @ irc.freenode.net Mailing lists @ http://forum.world.st/
- 13. Projects Seaside Web Framework Mars – native widgets Helvetia – embedded languages Etoys – programming for kids Open Cobalt– Collaborative 3D worlds
- 14. Common Misconceptions Why can’t I use [Emacs | VI]?! Where are all my files?! Why doesn’t Squeak/Pharo do X, damn it!?!?
- 15. Cool Tools Changes file – take that, Time Machine Method Names Method Finder
- 16. Loading Code Tools Loaders: Installer/Gofer Management: Monticello/Metacello Locations Squeak Source http://www.squeaksource.com/ Squeak Map http://map.squeak.org/ Other confusing items - Universes
- 17. Fathers of Modern Computing Alan Kay Doug Engelbart
- 18. References Books Squeak By Example (free) Pharo By Example (free) Smalltalk Best Practice Patterns Websites World of Smalltalk @ http://www.world.st/ Pharo @ http://pharo-project.org/home Squeak @ http://www.squeak.org/ Screencasts– http://pharocasts.blogspot.com/
- 19. Thank you! Sean DeNigris Clipper Adams, Inc. Email: sean@clipperadams.com Website: www.clipperadams.com The real romance is out ahead and yet to come. The computer revolution hasn't started yet. Don't be misled by the enormous flow of money into bad de-facto standards for unsophisticated buyers using poor adaptations of incomplete ideas. - Alan Kay
Editor's Notes
- #1 – open Ruby file, there can be code added in other places#2 a. open Finder, dig into Ruby libs *another metaphor*b. I wonder how the main display loop works? Vs. OS X
- Fix – example default local repo directoryUnderstand – Parser -> RBParser…Masters – SQ – timestamps – maybe impressed, maybe not so hard on yourself!
- #1 HelpSystem Class comments Method Comments Tests
- Turtles: VM written in Smalltalk compiled to C
- Etoys - etoyfriendly
- #1 You don’t need to But you can (somewhat) Or you can make your own#2 implementation detail industry got it wrong there are backends – that scale very well