FunScript: Why bother?

FunScript is an F# to JavaScript compiler but, why bother with yet another *** to JS compiler? Give me five minutes and I'll try to convince you.

1. FunScript
F# to JavaScript with type providers

2. FunScript
F# to JavaScript with type providers

3. FunScript
F# to JavaScript with type providers
It seems as if every programming language
in the world compiles now to JavaScript

And many of them are functional





So, why bother with FunScript?
Reason #1...

4. FunScript
F# to JavaScript with type providers
THERE’S A F#er
WITHIN YOU
AND YOU KNOW IT

5. FunScript
F# to JavaScript with type providers
F# is a mature, open source, cross-platform,
functional-first programming language.


F# runs on Linux, Mac OS X, Android, iOS,
Windows as well as HTML 5 and GPUs.



But enough of sales pitch!
Free as in beer!
And we all know when sth wants to conquer
the whole world is always a good thing
but also multi-paradigm

6. FunScript
F# to JavaScript with type providers
SHOW ME DA GOODIES

7. FunScript
F# to JavaScript with type providers
Write F# client-side code in powerful IDEs
with autocomplete and tooltips
Intellisense is addictive!
No plugin required!

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F# to JavaScript with type providers
F# compiler is your best friend
It helps you write better code by pointing out your mistakes
If it were a human I would kill it
...but it’s not!

9. FunScript
F# to JavaScript with type providers
Usual functional stuff





Type safety
without the hassle

10. FunScript
F# to JavaScript with type providers
Functional data structures









Never type
IEnumerable
again!

11. FunScript
F# to JavaScript with type providers
.NET mutable collections



They’ll compile as JS arrays and POJOs,
so they’re compatible with browser code

12. FunScript
F# to JavaScript with type providers
FunScript is compatible with many methods
of most used .NET classes





Am I the only one with trouble
to remember how to use Regex
and Dates in each platform?

13. FunScript
F# to JavaScript with type providers
.NET Regular Expressions usage example

14. FunScript
F# to JavaScript with type providers
F# unique features



Click here for
a wonderful talk

15. FunScript
F# to JavaScript with type providers
FunScript.HTML extensions

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F# to JavaScript with type providers

Every element has
an equivalent extension
property to generate
an IObservable

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F# to JavaScript with type providers

Internal state

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F# to JavaScript with type providers

String formatting
DateTime
These extension methods
can easily be implemented
for other platforms

19. FunScript
F# to JavaScript with type providers


LINQ, Web API and
FunScript do the tedious
marshaling work for you

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F# to JavaScript with type providers






Forget about “Inversion of Control”
Take the program flow control back!

21. FunScript
F# to JavaScript with type providers

No flags needed!

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F# to JavaScript with type providers
Some people
still like
JS event
handling
though

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F# to JavaScript with type providers
So FunScript and FunScript.HTML
extensions allow you to:





And most importantly...

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F# to JavaScript with type providers


This is great. But...
Nope!

25. FunScript
F# to JavaScript with type providers

26. FunScript
F# to JavaScript with type providers



Ractive.js

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F# to JavaScript with type providers

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F# to JavaScript with type providers

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F# to JavaScript with type providers


, a fantastic project

W is a

30. FunScript
F# to JavaScript with type providers

31. FunScript
F# to JavaScript with type providers

SA
BABY
That’s what he said in the Spanish version

32. FunScript
F# to JavaScript with type providers
FunScript has been created by Zach Bray
and several bright minds from the
F# community have contributed to it



...more at funscript.info

33. FunScript
F# to JavaScript with type providers









I’m also a
collaborator
now, but I’m
more of a
freeloader

34. FunScript
F# to JavaScript with type providers