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I'm enjoying a functional language

Page history last edited by Ron Romero 8 years, 10 months ago

 Languages used by prticipnts: 

  • Clojure
  • F#
  • Haskel
  • Common  Lisp
  • C# (used functionlly)
  • Scala
  • Javascript
Can do functional programming in C#.

Steve: Did Clojure for getting info from a wiki page into a database.  Surprised at how quickly it went.  Then parsed/cleaning up/decoded lots of raw data.  String processing.


Inline templating engine in clojure.

Strenuous computation over large data done in C# by a local functional programming guru. (who?)

Builder pattern to build UI in clojure.

Changing state. At root level & have a persistent data structure.  Change ref to point to new instance of the data structure.

"Nothing changes state" is a intellectual lie.  Because eventually something changes state or something points to new instance of data.

"I wouldn't write a CRUD app in functional language"  "Actually I'm about to do that."

Why haven't we come up with a simple "here's my objects, make a UI".
  • but generated UIs never look good.
  • users don't care about the data
  • but they do, cuz power users want excel dump
  • is that a failing in our UI?
  • why even provide a UI then.  Why don't we just5 provide them with an Excell dump?

Function programming really good for mathematical stuff, like Project Euler.

is there functional programming for .NET/CLR?
- clojure on CLR.

Learning FP makes you see other code differently.

Austin Code Dojo is doing genetic algorithm in clojure.  See http://www.ai-junkie.com/ga/intro/gat1.html for problem definition.

FP is somewhat immature.  Can't go to bookstore and buy book for best book on how to do FP, how best to write programs.
  • different communities in FP are forming best practices.
  • too acedemic
  • Too many things are language dependent
  • lazy evaluation is pretty cross language
  • Erlang has good best practices.
Open Close problem
    (with-open db
      (println (db/rows)))

open-db closes after it goes out of scope, but db/rows is lazy, so it tries to read after the DB is closed.

    (with-open db
      (println
        (doAll (db/rows))))
 
  • is that just a problem with with-open?  It almost sld lazy close.
  • is this cross-language?
  • How do we teach/discuss this cross-language?
Homoiconicity http://en.wikipedia.org/wiki/Homoiconicity "primary representation of programs is also a data structure in a primitive type of the language itself"
  • C# has a part of it.  lambda's etc.
I'm enjoying a functional language. Anyone out there - Steve Suehs Functional Languages

Count: 
  • Clojure: 3
  • F$: 2
  • Haskel: 1
  • Common  Lisp: 1
  • C#: 1
  • Scala: 0
  • Javascript: 1
Can do functional programming in C#.

Steve: Did clojure for getting info from a wiki page into a database.  Suprised at how quickly it went.  Then parsed/cleaning up/decoded lots of raw data.  Sting processing.

Heroku supports clojure

Inline templating engine in clojure ...

Strenuous computation over large data done in C# by a local functional programming guru.

Builder pattern to build UI in clojure.

Changing state
* root level & have a persistent data structure.  Change ref to point to new instance of the data structure.

"nothing changes state" is a intellectual lie.  Cuz eventually something changes state or something points to new instance of data.

CRUD app in clojure.  "I wldnt write a CRUD app in functional language"  "Actually I'm about to do that."

Why havent we come up with a simple "here's my objects, make a UI".
- but generated UIs never look good.
- users don't care about the data
- but they do, cuz power users want excel dump
- is that a failing in our UI?
- why even provide a UI then.  Why don't we just5 provide them with an Excell dump?

Function programming really good for mathmatical stuff. for Project Euler (sp?), which is 

is there functional programming for .NET/CLR?
- clojure on CLR.
- It's very hard for anything not Microsoft to gain any traction.
- Microsoft dominates it./unipolar world.

Leraning FP makes you see other code differently.

Dojo is doing genetic algorithm in clojure.  See http://www.ai-junkie.com/ga/intro/gat1.html for problem definition.

FP is somewhat immature.  Can't go to bookstore ad buy book for best book on how to do FP.  How best to write programs

- different communities in FP are forming best practices.
- too acedemic
- lazy evaluation is pretty cross language
- Erlang has goo best practices?

Open Close problem

(with-open db
  (println (db/rows)))

open-db closes after it goes out of scope, but db/rows is lazy, so it tries to read after the DB is closed.

(with-open db
  (println
n    (doAll (db/rows))))

- Me: is that just a problem with with-op?  It almost sld lazy close.
- is this cross-language?
- How do we teach/discuss this cross-language?

Homoiconicity http://en.wikipedia.org/wiki/Homoiconicity C# has a part of it.  lambda's etc.

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