1.
F# 4 EYE FOR THE
F# 1.1.11 GUY
P H I L T R E L F O R D
F # E X C H A N G E 2 0 1 6
S K I L L S M A T T E R , L O N D O N

2.
F# 1.1.11 IN 2006 TO F# 4 IN 2016
BABY SEAN (2007) FSHARPCONF – CH9 (2016)

3.
BACK ANOTHER DECADE TO 1995
Programming Languages appearing in
1995:
• PHP
• Java
• JavaScript
• Ruby*
• OCaml**
* Also a codename for VB in 91
** Caml Special Light was released in 1995, OCaml was a year later

4.
ASK ME ANYTHING

5.
T E A CH Y OURS ELF
P R OGRAMMI NG I N
T E N Y E ARS
Get interested in programming,
and do so because it is fun.
Talk with other programmers; read
other programs.
Work on projects with other
programmers.
Work on projects after other
programmers.
Learn at least a half
dozen programming languages.
Remember that there is a
"computer" in "computer science".

6.
F # 1 . 1. 11 R C
NOW A VA I LAB LE
let ArraySample() =
let numLetters = 26 in
let results = Array.create numLetters 0 in
let data = "The quick brown fox" in
for i = 0 to data.Length - 1 do
let c = data.Chars(i) in
let c = Char.ToUpper(c) in
if c >= 'A' && c <= 'Z' then begin
let i = Char.code c - Char.code 'A' in
results.[i] <- results.[i] + 1
end
done;
printf "done!n"
Don Syme’s WebLog – May
2016
As reported by the Hub
Father, F# 1.1.11.7 is
available. This is a “release
candidate”, which means we put
it up to see if it meets the
standards of those who
download and install it.
Source: https://blogs.msdn.microsoft.com/dsyme/2006/08/23/lightweight-syntax-option-in-f-1-1-12-3/

7.
BLOGOSPHERE

8.
H U B F S :
T H E P L AC E F O R F #
HubFS was run by the
mysterious optionScalper from
2005 to 2011, implemented an
ASP.Net it boasted over 100,000
members.
Now redirects to Adam
Granicz’s FPish “Online
Community of Functional
Developers” powered by
WebSharper.

9.
R I C K MI NE RI CH’ S
D E VE LOP MENT
WONDERLAND
The web site is no more and the
Wayback Machine and Google
do not have cached pages as
they were disallowed by the
robots.txt.
Baidu had no such issues…

10.
SERGEY TIHON’S F# WEEKLY

11.
F# ADVENT CALENDAR 2015

12.
NUMBERS

13.
TARGET OVER 2.2 BILLION DEVICES
NATIVELY WITH F#
NATIVELY VIA .NET & MONO
• Android
• iOS
• Linux
• Mac
• Windows
• Raspberry Pi
• etc.
AND DON’T FORGET VIA WEB
Everything else with
• Fable
• Freya
• FunScript
• Suave
• WebSharper
• etc.

14.
F# STARTUPS: JET.COM
$570M RAISED

15.
F# ARCHITECTURE
VISIBLE FROM SPACE

16.
F# USER GROUPS IN UK & EUROPE

17.
F#UNCTIONAL LONDONERS
• Founded Feb 2010
• 1000+ Members
• Meets every 2 weeks
• Topics include
– Machine Learning
– Finance
– Games
– Web
http://meetup.com/fsharplondon

18.
F# MACHINE LEARNING BOOKS…
ARE LIKE BUSES

19.
LANGUAGE

20.
F# VERSIONS
F#2
• Active Patterns
• Units of Measure
• Async & Agents
• Computation
Expressions
F#3
• Type Providers
• Linq Queries
• Auto-properties
• Named Union
Fields
F#4
• Library unification
• Performace
optimizations
• Community-driven

21.
DISCRIMINATED UNIONS:
NAMED UNION FIELDS

22.
PLATFORMS

23.
PLATFORMS: .NET CORE
RUNTIMES
.Net
Mono
JS
Web
Assembly?
OpenCL
GPU
.Net Core
.NET CORE -> LINUX!!!

24.
PLATFORMS: FABLE
RUNTIMES
.Net
Mono
JS
Web
Assembly?
OpenCL
GPU
.Net Core
F# CODE DIRECT TO JS

25.
TOOLING

26.
VISUAL F# POWER TOOLS
Friends don’t let friends use Visual Studio without the Power Tools

27.
IONIDE: XPLAT IN ATOM & VS CODE

28.
TRY WEBSHARPER ONLINE

29.
FUN 3D: FUNSCRIPT

30.
SUMMARY

31.
F# 4 FOR F# 1.1.11
• COMMUNITY HAS GROWN!
• HUGE ARRAY OF LEARNING MATERIAL NOW AVAILABLE!
• CUTTING EDGE LANGUAGE FEATURES!
• TARGET BILLIONS OF DEVICES

32.
QUESTIONS