My first presentation of my programming language Spry at the "GDG Stockholm Language bash" 2017-02-02 hosted at Valtech, Stockholm. It went well I think but probably not that interesting without my code demos and voice!

1. Göran Krampe
Evothings, 3DICC, Krampe Dynamic Development
http://goran.krampe.se
http://sprylang.org

2. Autumn 2015
two things coincided...
● I discovered Nim
– Fast systems language with GC
– Compiles via C, js, C++ or ObjC
● I (re)discovered Rebol
– Homoiconic (but not Lisp)
– Interesting ideas

3. Autumn 2015

4. First called Ni
(but that was a horrible name)

6. Primary sources of inspiration
Smalltalk
Rebol
Nim
Javascript
Lisp
Forth

7. Quick facts
● Core interpreter ca 1400 lines of Nim
– Parser 700 (~10 Mb/s)
– Interpreter 700 (currently naive recursive eval)
● 21 VM modules another 1400 lines
– core, basic, io, math, debug, thread, os, oo
– json, string, block, ui, reflect, compress, modules
– net, browser, sophia, memfile, smtp, python

8. Grammar

9. Ways to run Spry today
● spry – Classic stdin interpreter
● ispry – Classic REPL
● Compile VM to js and run in browser
● Embedding source in binary

10. Spry crazy ideas
● No statement separators!
● Both prefix, mixfix and keyword calls!
● Argument passing by ”pull”
● Novel OO approach
● The Map literal syntax ”hack”

11. Current goals
● Performance in ”CPython country”
● Fully live IDE using libui
● Explore IoT use cases
– Very small interpreter
– Mobile code and data
● Explore Gemstone-ish persistence