Speakers: Jake Brownson, Leif

Hope to see you there!

ABOUT THE GROUP: Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, OCaml, Erlang, Scala and others, as well as using functional techniques in non-functional languages. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

A study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

We'll discuss what Haskell is good for and why you should care, the ever popular "what's a monad" and anything functional related people want to talk about.

Echo Nolan will be presenting the paper "Generic Constructors and Eliminators from Descriptions: Type Theory as a Dependently Typed Internal DSL" by Tim Sheard and Larry Diehl. The authors describe a method of encoding inductive types via descriptions that are ordinary terms, rather than each inductive type adding a new set of axioms to the theory. They go on to contribute a generic eliminator function that works for any type defined in this way.

Bring your functional problems, success stories and questions. Topics TBD

A study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

The next pdxfunc meeting is almost here. Unless someone jumps in at the last minute, we don't have a speaker. However, please still go to the meeting! We've had a couple speaker-less meetings and they've been great, with lots of good discussions.

If there's interest, we can do some live hacking that doesn't require any preparation. For example, take turns at the notebook's keyboard and reimplement that Ruby-based "du"-like program I demoed last time that we had so much fun discussing, but this time using a "real" functional programming language. Or do some "code spelunking", taking turns digging through and discussing an interesting library for an FP language (e.g., one of Galois's open sourced Haskell contributions) and talking about how it works.

See you there!

Portland Functional Programming Study Group (pdxfunc)

A study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts.

Julian Blake Kongslie will present an introduction to state-space search, followed by some examples of various search methods in Haskell, with examples of both how to use search and how to write search code.

pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

Meet to have dinner and talk with other functional programming enthusiasts, whether locals or OSCON attendees.

We'll be upstairs.

ABOUT: Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

ABOUT: Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

ABOUT: Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

TOPICS: * Jamey Sharp will talk about Haskell database and web application abstractions used in http://serialist.net * More...

ABOUT: Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

ABOUT: Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

ABOUT: Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

VENUE: This meeting will be in the Lucky Lab Brew Pub's events room. If you enter the pub through the front door on Hawthorne, the events room will be on your right on the hallway leading to the main room. There will be a 'pdxfunc' sign on the events room door.

ABOUT: Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

VENUE: This meeting will be in the Lucky Lab Brew Pub's events room. If you enter the pub through the front door on Hawthorne, the events room will be on your right on the hallway leading to the main room. There will be a 'pdxfunc' sign on the door.

ABOUT: Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

VENUE: We're at the Roots Organic Brewing events room this month, at the corner of Clay and SE 7th. The room's entrance is the glass double doors on Clay, there will be a "pdxfunc" sign on them. There's also an interior entrance in the bar, ask the bartender how to get to the events room or look for a "pdxfunc" sign on a pair of solid double doors.

PRESENTATIONS

1. "Reinventing Wheeler" by Matt Youell -- Wheeler is a lazy, imperative, declarative language with no functions and no objects. Some languages try to eliminate state. In Wheeler state is the primary abstraction. Wheeler is very early in development and is at a stage where feedback from the technical community would be greatly appreciated.

ABOUT: Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

VENUE: We're at the Roots Organic Brewing events room this month, at the corner of Clay and SE 7th. The room's entrance is the glass double doors on Clay, there will be a "pdxfunc" sign on them. There's also an interior entrance in the bar, ask the bartender how to get to the events room or look for a "pdxfunc" sign on a pair of solid double doors.

ABOUT: Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

VENUE: We're at the Roots Organic Brewing events room this month, at the corner of Clay and SE 7th. The room's entrance is the glass double doors on Clay, there will be a "pdxfunc" sign on them. There's also an interior entrance in the bar, ask the bartender how to get to the events room or look for a "pdxfunc" sign on a pair of solid double doors.

ABOUT: Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

VENUE: We're meeting in the PSU Engineering Building, 4th floor conference room. Any changes to plan will be listed on a sign taped to the main door. The building is at 1930 SW Fourth, Portland, Oregon 97201. It's on the right side of a large concrete courtyard. Here's a photo of the building: http://en.wikipedia.org/wiki/File:Portland_state_university_EB.jpg

1. Presentation: Jamey Sharp will give us a walk-through of the Haskell gzip deflate algorithm code that he and Josh Triplett developed.

2. Group coding activity: We'll split up into groups that will each try to build an FP app from scratch in an hour, and then share the results with everyone. We'll make teams with people of different skill levels, so having FP coding skills will be useful but not required. My hope is this activity will give more folks a chance to explore and learn from others how to design and implement an FP app. Sample app ideas: blog, Twitter-clone, Sinatra-like web-framework, message queue client/server, filesystem directory browser, CSV-to-JSON converter, etc.

ABOUT: Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

VENUE: You can enter the event space through the glass doors on 7th that are close to the intersection with Clay, or through the front door and just look for signs to the event space. There will be pdxfunc signs on both.

ABOUT: Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

VENUE: You can enter the event space through the glass doors on 7th that are close to the intersection with Clay, or through the front door and just look for signs to the event space. There will be pdxfunc signs on both.

ABOUT: Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

VENUE: You can enter the event space through the glass doors on 7th that are close to the intersection with Clay, or through the front door and just look for signs to the event space. There will be pdxfunc signs on both.

PRESENTATIONS

• "Serialist: Lazy web-crawling in Haskell" by Jamey Sharp and Josh Triplett

The http://serialist.net/ site provides a way to find, track and read serialized content (e.g., web comics). It's implemented entirely in Haskell and demonstrates functional web application development, crawling, scraping and distributed architecture. Serialist uses interesting graph algorithms to add and step through content lazily. Work on the site also produced useful, reusable Haskell modules: early-finish monad, HTTP Digest implementation, database layer, recursive monadic data structures, fast/lazy character converter, etc. Jamey and Josh will discuss these topics as well as their experiences analyzing and profiling their Haskell code to improve performance and reduce memory consumption.

• Jamey Sharp's day job involves a computer test for attention deficit disorder, but his biggest projects have been the Portland State Aerospace Society, XCB, and Serialist. Twitter: @jamey_sharp. Projects: http://www.ohloh.net/accounts/jamey

• Josh Triplett is a PhD student at Portland State University and a Free and Open Source Software hacker. He's involved in research on relativistic programming and advanced synchronization techniques for highly parallel systems. Josh builds and launches Linux-powered rockets with the Portland State Aerospace Society, and hacks on numerous other projects. Homepage with projects: http://joshtriplett.org/

DISCUSSION TOPICS: * "Haskell Binary Parsing Showdown: Data.Serialize VS Data.Binary" by Trevor Elliott and Don Stewart. These two packages represent two ends of the spectrum for efficient parsing of binary, structured data in Haskell. The authors of both packages will show down describing the design and implementation, the benefits and the downsides. * "Control.Monad.Random" by Julian Blake Kongslie * "Linux Kernel Modules with Haskell" by Thomas DuBuisson * "Command-line argument/option parsing" by Bart Massey * "Unchecked unsafeCoerce and alternatives" by Thomas DuBuisson and Bart Massey

ABOUT: Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

VENUE: Space for the meeting is kindly provided by NedSpace, a co-working space for startups, innovative technology companies, non-profits, artists and social entrepreneurs.

Title: Designing, visualizing and benchmarking data structures in Haskell

Abstract: Understanding how functional languages represent data structures is key to writing efficient programs in such languages. There are a number of new tools in the Haskell ecosystem for understanding what the compiler is doing: vacuum - for visualizing the heap, criterion - for statistically sound benchmarking, and powerful new type system features enabling new kinds of library design. This talk will introduce these tools, and we'll look at how they impact the way we develop new data structures in Haskell.

Bio: Don is an Australian open source hacker, and engineer at Galois, Inc, in Portland, where he works on assurance in critical systems. Don is co-author of the book, Real World Haskell (http://realworldhaskell.org), and the XMonad window manager. He enjoys cycling and hoppy beer.

GROUP: Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

VENUE: Space for the meeting is kindly provided by NedSpace, a co-working space for startups, innovative technology companies, non-profits, artists and social entrepreneurs.

Join programmers, researchers and enthusiasts to discuss functional programming. pdxfunc is a study/user group exploring the world of functional programming based in Portland, Oregon. The group welcomes programmers interested in all functional languages, including Haskell, Erlang, OCaml, Scala, and others. The group meets regularly and provides presentations, demos and discussions applicable to all skill levels, from newbies and experts. The meetings are usually on the second Monday of the month.

VENUE: Space for the meeting is kindly provided by NedSpace, a co-working space for startups, innovative technology companies, non-profits, artists and social entrepreneurs.

Join programmers, researchers and enthusiasts to discuss functional programming.

VENUE The meeting will be in the events room. If you enter through the venue's Hawthorne entrance, this room will be on your right.

CONTENT * Brian Rice will talk about the functional aspects of his Slate programming language. * ...and other great talks and open discussions at the meeting.

Join programmers, researchers and enthusiasts to discuss functional programming.

Please reply on the pdxfunc mailing list if you'd like to make a presentation or want to suggest a discussion topic for the meeting.

Possible talk and discussion ideas: * Exploring Lisp, Scheme or Clojure * Comparing Haskell Platform and OCaml BatteriesIncluded * Review and discuss some FP code, e.g. Kestrel, or some package in Cabal, etc * ...your great idea here!

See you soon!

Join programmers, researchers and enthusiasts to discuss functional programming.

We're meeting at the Lucky Labrador Brew Pub's event room this month, I'll post a sign on the door to guide you once there.

Please reply on the mailing list if you'd like to make a presentation or want to suggest a discussion topic for the meeting.

Possible talk and discussion ideas: * Exploring Lisp, Scheme or Clojure * Comparing Haskell Platform and OCaml BatteriesIncluded * Review and discuss some FP code, e.g. Kestrel, or some package in Cabal, etc * ...your great idea here!

See you soon!