Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Adopting Functional
Search
Kresten Krab Thorup
September 15, 2012
2
210
Adopting Functional
Keynote for the CUFP conference 2012 in Copenhagen by Kresten Krab Thorup.
Kresten Krab Thorup
September 15, 2012
Tweet
Share
More Decks by Kresten Krab Thorup
See All by Kresten Krab Thorup
Erjang - inside Erlang on the JVM
krestenkrab
3
1.6k
HanoiDB - and Other Riak Hacks
krestenkrab
10
2.3k
Featured
See All Featured
Connecting the Dots Between Site Speed, User Experience & Your Business [WebExpo 2025]
tammyeverts
6
300
The Invisible Side of Design
smashingmag
301
51k
How to Think Like a Performance Engineer
csswizardry
25
1.7k
Principles of Awesome APIs and How to Build Them.
keavy
126
17k
Build your cross-platform service in a week with App Engine
jlugia
231
18k
The Pragmatic Product Professional
lauravandoore
35
6.7k
Java REST API Framework Comparison - PWX 2021
mraible
31
8.7k
jQuery: Nuts, Bolts and Bling
dougneiner
63
7.8k
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
panda_program
107
19k
XXLCSS - How to scale CSS and keep your sanity
sugarenia
248
1.3M
Become a Pro
speakerdeck
PRO
29
5.4k
Raft: Consensus for Rubyists
vanstee
140
7k
Transcript
Adopting Functional Kresten Krab Thorup CTO, Trifork @drkrab
An “Object Head” in Erlang Land Kresten Krab Thorup CTO,
Trifork @drkrab
identity properties mutable state specialize/ generalize whole/part
None
None
Java gets boring after a while...
Anthropology Class
Group Dynamics The discouraging truth about
Constant Innovation
The 10% rule
Teach It! To really learn something:
Why did objects succeed?
Ole-Johan Dahl & Kristen Nygaard
“...each Smalltalk object is a recursion on the entire possibilities
of the computer. Thus its semantics are a bit like having thousands and thousands of computers all hooked together by a very fast network.” Alan Kay, HOPL 1993
Objects are interpreters
(“booh!”, ...) -> object -> (result, ...)
object.method(args, ...) vs. method(object, args, ...)
set.size() vs. size(set)
set.intersect(anotherSet) set.includes?(element) vs. intersect(set, anotherSet) includes?(set, element)
Conceptual modeling
Thinking Tools
Connect the solution to the problem
T ☠ THREADS & LOCKS AHEAD SINCE JAVA 1996
$! $ % * method method method method data
*# (%# * ()* % * &(%(# ) +(
""+)*(*) $! $ % * method method method method data /%+4, ,( *!" $/ !$ % +"* &(%(##$ &(%"# *4) (%+&) % +$*%$) ** -%(! %$ &(*+"( !$ % *1#&"* 2% *%($* &(%(##$ #!) *) +$*%$ (%+&) .&"* (%+& (*( *$ *) %#&%$$*) %$"/ -/ *% $ % *4) * * / %#$$ %* )** $ ,%( $ )$" +$* $ % * %# (""/ ) (*( *$ * )+# % *) &(*) $ % * ) !$ % )")+ %,( )& +$*%$" ( * $ &"/ +""" #%+"( (%" !& *%($* *(#$%"%/ ,() (%# "$+ *% " $)* % % *%($* &(%(##$ ) *% %#$ )** *1$ "," +$* $ # $ *% , * "$+ )+&&% $ * )*(+*+( ** )(,) *%) +$*%$) +$*%$) ( ") % *) * )*(+*+( ( *) "# %!" #*%) *# (%# * ()* % * &(%(# ) +( ""+)*(*) $! $ % * method method method method data /%+4, ,( *!" $/ !$ % +"* &(%(##$ &(%"# (%+&) % +$*%$) ** -%(! %$ &(*+"( !$ % *1#&" *%($* &(%(##$ #!) *) +$*%$ (%+&) .&" *1$ "," +$* $ # $ * )*(+*+( ** )(,) *% ") % *) * )*(+*+( ( *) " *# (%# * ()* % * &(% $! $ % * method method method method data /%+4, ,( *!" $/ !$ % (%+&) % +$*%$) ** -%(! %$ & *%($* &(%(##$ #! (%+& (*( *$ *) %#&%$$*) / %#$$ %* )** $ , (""/ ) (*( *$ * )+# % *) & %,( )& +$*%$" ( * $
Function + Data State Containment Process + Message
Function + Data State Containment Process + Message
Software as Infrastructure
Enter: Erlang
Not a functional concurrent programming language Erlang is...
System for Reliable Computing Erlang is...
FP Language “OS for code” Erlang is...
Your favorite OS BEAM Emulator Your Erlang Program OTP Framework
BEAM BIFs
Java Virtual Machine Your favorite OS ERJANG Your Erlang Program
OTP Framework BEAM JVM BIFs
“...each Smalltalk object is a recursion on the entire possibilities
of the computer. Thus its semantics are a bit like having thousands and thousands of computers all hooked together by a very fast network.”
“...each Erlang process is a recursion on the entire possibilities
of the computer. Thus its semantics are a bit like having thousands and thousands of computers all hooked together by a very fast network.”
Except in Erlang, each “computer” is programmed with FP
Interactive Coordination Messaging + processes Want to understand! Concurrency Parallelism
Functional Computation Utilize hardware Want to NOT understand
None
None
Post-Mainstream
“The Right Tool for the Job” Post-Mainstream Tech Mesh Conference
London, December 2012
Interactive Systems
Thanks @drkrab