already have mastered the skill of leveraged reading: getting what you can out
of an article you don't fully understand, so that you can discuss it with the rest of
the group and hopefully get to a point where you can read it again and
-get more out of out. (Rinse and repeat.)
+get more out of. (Rinse and repeat.)
## General issues about variables and binding in programming languages ##
* [[!wikipedia Lambda calculus]]
* [Chris Barker's Lambda Tutorial](http://homepages.nyu.edu/~cb125/Lambda)
* [Lambda Animator](http://thyer.name/lambda-animator/)<p>
-* [[!wikipedia Haskell Curry]]
+<!-- Haskell Curry had ideas that he felt were validated upon reading a 1924 paper by M. Schönfinkel "Uber die Bausteine der mathematischen Logik" which used combinators in a similar way to his own ideas. Haskell then wrote "An analysis of logical substitution" which appeared in the American Journal of Mathematics in 1929. -->
* [[!wikipedia Moses Schönfinkel]]
+* [[!wikipedia Haskell Curry]]
* [[!wikipedia Alonzo Church]]<p>
* [[!wikipedia Combinatory logic]]
* [Combinatory logic](http://plato.stanford.edu/entries/logic-combinatory/) at the Stanford Encyclopedia of Philosophy
-* [[!wikipedia SKI combinatory calculus]]<p>
+* [[!wikipedia SKI combinatory calculus]]
* [[!wikipedia B,C,K,W system]]
+ <!-- Jeroen Fokker, The Systematic Construction of a One-combinator Basis for Lambda-Terms. Formal Aspects of Computing 4 (1992), pp. 776-780
+ http://people.cs.uu.nl/jeroen/article/combinat/combinat.ps -->
+* [Chris Barker's Iota and Jot]() (broken link)<p>
* [[!wikipedia Church-Rosser theorem]]
* [[!wikipedia Normalization property]]
* [[!wikipedia Turing completeness]]<p>
+ [How to Design Programs](http://www.htdp.org/2003-09-26/), by Matthias Felleisen, et al., which the Racket groups recommends. Whenever the book says "Scheme," you can read it as "Racket."
- Another warmly-recommended introduction available online is:
-
- + [Teach Yourself Scheme in Fixnum Days](http://www.ccs.neu.edu/home/dorai/t-y-scheme/t-y-scheme.html)
+ Another warmly-recommended introduction available online is [Teach Yourself Scheme in Fixnum Days](http://www.ccs.neu.edu/home/dorai/t-y-scheme/t-y-scheme.html) This is a short introductory text that introduces common Scheme techniques.
* If you're already a programmer and you're in more of a hurry, you could instead look at the [Quick Introduction to Racket](http://docs.racket-lang.org/quick/index.html). This tutorial provides a brief introduction to the Racket programming language by using DrRacket and one of Racket's picture-drawing libraries.
revision was published in 1978 called "The revised report on Scheme, a
dialect of Lisp." Thereafter, revisions of the standard were titled "The
Revised Revised Report..." and so on, or "The Revised^n Report..." for
-short, for increasing n. The most widely implemented standard is [The
-Revised^5 Report on Scheme](http://docs.racket-lang.org/r5rs/index.html),
+short. One widely implemented standard is [The
+Revised^5 Report on Scheme](http://www.schemers.org/Documents/Standards/R5RS/HTML/),
or R5RS, published in 1998.
-\[ [Alt link](http://www.schemers.org/Documents/Standards/R5RS/HTML/) \]
-A new standard [R6RS](http://docs.racket-lang.org/r6rs/index.html) was ratified
-in 2007, but this has many detractors and has not been fully accepted in the
-community.
-\[ [Alt link](http://www.r6rs.org/final/html/r6rs/r6rs.html);
-[Libraries](http://www.r6rs.org/final/html/r6rs-lib/r6rs-lib.html) \]
+A new standard [R6RS](http://www.r6rs.org/final/html/r6rs/r6rs.html) ([Libraries for R6RS](http://www.r6rs.org/final/html/r6rs-lib/r6rs-lib.html))
+was ratified in 2007, and this is implemented in Racket; but it also has many detractors and has not been fully
+accepted in the community. As a result, the Scheme language [may in the future split](http://scheme-reports.org/2009/position-statement.html)
+into a lean, minimal base, closer to
+R5RS Scheme, and a richer language like R6RS Scheme that standardizes many of the add-ons that programmers tend to build
+on top of the base.
* [Scheme FAQ](http://community.schemewiki.org/?scheme-faq)
-
* [Scheme Requests for Implementation](http://srfi.schemers.org/) (SRFI)
-
* The [Schematics Scheme Cookbook](http://schemecookbook.org/) is a collaborative effort to produce documentation and recipes for using Scheme for common tasks.
* [[!wikipedia Y combinator]]
* [Chapter 9 from The Little Schemer](http://www.ccs.neu.edu/home/matthias/BTLS/sample.ps) on the Y Combinator "...and Again, and Again, and Again..."
* [The Y combinator](http://mvanier.livejournal.com/2700.html)
+* [The Why of Y](http://www.dreamsongs.com/NewFiles/WhyOfY.pdf)
* [The Y Combinator (Slight Return), or: How to Succeed at Recursion Without Really Recursing](http://mvanier.livejournal.com/2897.html)
* [Y Combinator for Dysfunctional Non-Schemers](http://rayfd.wordpress.com/2007/05/06/y-combinator-for-dysfunctional-non-schemers/)
* [The Y Combinator](http://www.ece.uc.edu/~franco/C511/html/Scheme/ycomb.html)
-* [The Y Combinator](http://dangermouse.brynmawr.edu/cs245/ycomb_jim.html), described as:
- > This is the derivation of the applicative-order Y-combinator from scratch, in Scheme. The following derivation is similar in flavor to the derivation found in The Little LISPer by Friedman/Felleisen, but uses a slightly different starting approach...
+* [The Y Combinator](http://dangermouse.brynmawr.edu/cs245/ycomb_jim.html) derives the applicative-order Y-combinator from scratch, in Scheme. This derivation is similar in flavor to the derivation found in The Little Schemer, but uses a slightly different starting approach...
## Evaluation Order ##
* [[!wikipedia Tagged union]]
* [[!wikipedia Algebraic data type]]
+* [[!wikipedia Recursive data type]]
* [[!wikipedia Pattern matching]]
* [[!wikipedia Unit type]]
* [[!wikipedia Bottom type]]
* [Type Theory](http://plato.stanford.edu/entries/type-theory/) at the Stanford Encyclopedia of Philosophy
* [Church's Type Theory](http://plato.stanford.edu/entries/type-theory-church/) at the Stanford Encyclopedia of Philosophy
* The [[!wikipedia Curry-Howard isomorphism]]
-* [The Curry-Howard correspondence in Haskell](http://www.thenewsh.com/~newsham/formal/curryhoward/)<p>
+* [The Curry-Howard correspondence in Haskell](http://www.thenewsh.com/~newsham/formal/curryhoward/)
+* [The Curry-Howard Isomorphism](http://en.wikibooks.org/wiki/Haskell/The_Curry-Howard_isomorphism) at Haskell wiki<p>
* [[!wikipedia Type polymorphism]]
* [[!wikipedia System F]]
## Learning OCaml ##
-* [[!wikipedia Objective Caml]]
+* [[!wikipedia Objective Caml desc="Wikipedia overview of OCaml"]]
+
+* [A Concise Introduction to Objective Caml](http://www.csc.villanova.edu/~dmatusze/resources/ocaml/ocaml.html)
+
+* Here are [two](http://www.cs.jhu.edu/~scott/pl/lectures/caml-intro.html) [other](http://pauillac.inria.fr/caml/FAQ/stephan.html) brief overviews of OCaml, aimed at readers who already have some programming experience. Here are [two](http://pauillac.inria.fr/caml/FAQ/exemples-eng.html) [more](http://pauillac.inria.fr/caml/FAQ/qrg-eng.html), even briefer.
+
+* Here's a [more detailed tutorial](http://www.ocaml-tutorial.org/) for OCaml.
+
+* The start of the [OCaml Reference Manual](http://caml.inria.fr/pub/docs/manual-ocaml/manual003.html) has another tutorial.
+
+* Jason Hickey has posted a [draft of a nice book introducing OCaml](http://www.cs.caltech.edu/courses/cs134/cs134b/book.pdf).
+
+* FAQs for [OCaml Beginners](http://pauillac.inria.fr/caml/FAQ/FAQ_DEBUTANT-eng.html), and [a few more](http://caml.inria.fr/resources/doc/faq/). Also FAQs for [OCaml Experts](http://pauillac.inria.fr/caml/FAQ/FAQ_EXPERT-eng.html).
+
## Side-effects / mutation ##
* [[!wikipedia Side effect (computer science) desc="Side effects"]]
* [[!wikipedia Reference (computer science) desc="References"]]
* [[!wikipedia Pointer (computing) desc="Pointers"]]
+* [Pointers in OCaml](http://caml.inria.fr/resources/doc/guides/pointers.html)
## Monads ##
* [[!wikipedia Monad (functional programming) desc="Monads in Functional Programming"]]
-
* [A Gentle Intro to Haskell: About Monads](http://www.haskell.org/tutorial/monads.html)
-
* [Understanding Haskell Monads](http://ertes.de/articles/monads.html)
-
* [The State Monad: a tutorial for the confused?](http://coder.bsimmons.name/blog/2009/10/the-state-monad-a-tutorial-for-the-confused/)
-
* [Beyond Monads](http://blog.sigfpe.com/2009/02/beyond-monads.html)
-
* [Simple Explanation of a Monad](http://math.stackexchange.com/questions/405/simple-explanation-of-a-monad)
-
* [What is a Monad?](http://stackoverflow.com/questions/44965/what-is-a-monad)
-
* [Can Anyone Explain Monads?](http://stackoverflow.com/questions/2366/can-anyone-explain-monads)
-
* [Monad in Plain English...](http://stackoverflow.com/questions/2704652/monad-in-plain-english-for-the-oop-programmer-with-no-fp-background)
-
* [Monad in non-programming terms](http://stackoverflow.com/questions/3261729/monad-in-non-programming-terms)
-
* [Real World Haskell: chapter on Monads](http://book.realworldhaskell.org/read/monads.html)
-
* [Learn You a Haskell for Great Good: chapter on Functors, Applicative Functors and Monoids](http://www.learnyouahaskell.com/functors-applicative-functors-and-monoids)
-
* Monads are Elephants:
[Part 1](http://james-iry.blogspot.com/2007/09/monads-are-elephants-part-1.html)
[Part 2](http://james-iry.blogspot.com/2007/10/monads-are-elephants-part-2.html)
[Part 3](http://james-iry.blogspot.com/2007/10/monads-are-elephants-part-3.html)
[Part 4](http://james-iry.blogspot.com/2007/11/monads-are-elephants-part-4.html)
-
* [Brian Beckman: Don't fear the Monad (67 minute video)](http://channel9.msdn.com/shows/Going+Deep/Brian-Beckman-Dont-fear-the-Monads/)
-
* [A monad non-tutorial...or why you shouldn't ask what a monad is](http://strongtyped.blogspot.com/2010/01/monad-non-tutorial.html)
-
* [The Mother of all Monads](http://blog.sigfpe.com/2008/12/mother-of-all-monads.html)
-
* [You Could Have Invented Monads! (And Maybe You Already Have.)](http://blog.sigfpe.com/2006/08/you-could-have-invented-monads-and.html)
-
* [Monads! (and Why Monad Tutorials Are All Awful)](http://ahamsandwich.wordpress.com/2007/07/26/monads-and-why-monad-tutorials-are-all-awful/)
-
* [Of monads and spacesuits (archived)](http://www.iterasi.net/openviewer.aspx?sqrlitid=ixx7fcluvek_9lfolsxr_g)
-
* [Haskell wikibook: Understanding monads](http://en.wikibooks.org/wiki/Haskell/Understanding_monads)
-
* Haskell state monads: [part 1](http://mvanier.livejournal.com/1765.html) [part 2](http://mvanier.livejournal.com/1901.html)
-
* [How not to explain Haskell monads](http://mvanier.livejournal.com/1205.html)
-
* Yet Another Monad Tutorial: [part 1](http://mvanier.livejournal.com/3917.html) [part 2](http://mvanier.livejournal.com/4305.html)
[part 3](http://mvanier.livejournal.com/4586.html) [part 4](http://mvanier.livejournal.com/4647.html)
-
* [Research Papers/Monads and Arrows](http://www.haskell.org/haskellwiki/Research_papers/Monads_and_arrows)
-
* [Philip Wadler. Monads for Functional Programming](http://homepages.inf.ed.ac.uk/wadler/papers/marktoberdorf/baastad.pdf):
in M. Broy, editor, *Marktoberdorf Summer School on Program Design Calculi*, Springer Verlag, NATO ASI Series F: Computer and systems sciences, Volume 118, August 1992. Also in J. Jeuring and E. Meijer, editors, *Advanced Functional Programming*, Springer Verlag, LNCS 925, 1995. Some errata fixed August 2001.
-
The use of monads to structure functional programs is described. Monads provide a convenient framework for simulating effects found in other languages, such as global state, exception handling, output, or non-determinism. Three case studies are looked at in detail: how monads ease the modification of a simple evaluator; how monads act as the basis of a datatype of arrays subject to in-place update; and how monads can be used to build parsers.
-
* [Philip Wadler. The essence of functional programming](http://homepages.inf.ed.ac.uk/wadler/papers/essence/essence.ps):
invited talk, *19'th Symposium on Principles of Programming Languages*, ACM Press, Albuquerque, January 1992.
-
This paper explores the use monads to structure functional programs. No prior knowledge of monads or category theory is required.
-
Monads increase the ease with which programs may be modified. They can mimic the effect of impure features such as exceptions, state, and continuations; and also provide effects not easily achieved with such features. The types of a program reflect which effects occur.
-
The first section is an extended example of the use of monads. A simple interpreter is modified to support various extra features: error messages, state, output, and non-deterministic choice. The second section describes the relation between monads and continuation-passing style. The third section sketches how monads are used in a compiler for Haskell that is written in Haskell.
## Monads in Category Theory ##
* [[!wikipedia Continuation-passing style]]
* [[!wikipedia Call-with-current-continuation]]
* [Intro to call/cc](http://community.schemewiki.org/?call-with-current-continuation) at SchemeWiki
+* [Call With Current Continuation](http://www.c2.com/cgi/wiki?CallWithCurrentContinuation)
+* [Continuations Made Simple and Illustrated](http://www.ps.uni-saarland.de/~duchier/python/continuations.html)
+* [Continuation kata](http://programming-musings.org/2006/02/12/continuation-kata/)
+* [Understanding continuations](http://keithdevens.com/weblog/archive/2004/Jul/11/continuations) [Commentary](http://lambda-the-ultimate.org/node/86)
+* [Continuations In Scheme](http://tech.phillipwright.com/2010/05/23/continuations-in-scheme/)
+* [Understanding Scheme Continuations](http://sanjaypande.blogspot.com/2004/06/understanding-scheme-continuations.html). This is tagged "Part I" but I think there's no further parts.
+* [Continuations for Curmudgeons](http://www.intertwingly.net/blog/2005/04/13/Continuations-for-Curmudgeons) [Commentary](http://lambda-the-ultimate.org/node/643)
+* [Haskell wiki on Continuations](http://www.haskell.org/haskellwiki/Continuation)<p>
* [[!wikipedia Delimited continuation]]
-* [Delimited/composable continuations tutorial](composable-continuations-tutorial) at SchemeWiki
+* [Composable Continuations Tutorial](http://community.schemewiki.org/?composable-continuations-tutorial) at SchemeWiki
+* [Post by Ken](http://lambda-the-ultimate.org/node/1197#comment-12927) on Lambda the Ultimate explaining difference between undelimited and delimited continuations
+* [shift, reset and streams](http://chneukirchen.org/blog/archive/2005/04/shift-reset-and-streams.html)
+* [guile and delimited continuations](http://www.wingolog.org/archives/2010/02/26/guile-and-delimited-continuations)
+* [Delimited continuations in Scala](http://blog.richdougherty.com/2009/02/delimited-continuations-in-scala_24.html)
+* [Delimited Continuations Explained (in Scala)](http://dcsobral.blogspot.com/2009/07/delimited-continuations-explained-in.html)
+* [Partial Continuations](http://www.bluishcoder.co.nz/articles/scheme/partial-continuations.html)
+* Delimited Continuations in MzScheme:
+[Part 1](http://schemekeys.blogspot.com/2006/11/prompts-their-interaction-with-dynamic.html)
+[Part 2](http://schemekeys.blogspot.com/2006/12/delimited-continuations-in-mzscheme.html)
+[Part 3](http://schemekeys.blogspot.com/2007/01/going-further-with-primitives.html)
+[Part 4](http://schemekeys.blogspot.com/2007/01/odd-and-ends.html)<p>
+* [Online Bibliography of Scheme Research: Continuations and Continuation Passing Style](http://library.readscheme.org/page6.html)
+* [Delimited continuations in natural language semantics](http://okmij.org/ftp/gengo/)
## Linear Logic ##