[racket-users] parts as the top-level unit in books

The Scribble Book format https://docs.racket-lang.org/scribble/Book_Format.html?q=scribble%20book has the *chapter* as the highest-level unit. For a book with lots of chapters, it's useful to have a higher-level unit, like a *part*. (E.g., *How to Design Programs* is broken down by parts, and t

[racket-users] cross-module `error` changed?

Has something changed in how `error` works across modules? This code that I used last year without trouble seems to run into trouble now. Here's the code all in one module: #lang racket (provide yield resume) (define resumer #f) (define (yield) (let/cc k (set! resumer k) (error 'yie

Re: [racket-users] Incorporating Markdown documents into Scribble

Apologies, I left in some debugging code. All we need is @(define (markdown-inline file) (xexprs->scribble-pres (with-input-from-file file read-markdown))) This will do you job, Jos Koot. For instance: @title{Hello} @(markdown-inline "new.md") combined with (as "new.md") This is a *

Re: [racket-users] Incorporating Markdown documents into Scribble

Short and final version: @(define (markdown-inline file) (pr (xexprs->scribble-pres (with-input-from-file file read-markdown Shriram Shriram > > Ryan > > > On Sun, Sep 13, 2020 at 1:50 PM Shriram Krishnamurthi > wrote: > >> It's useful to have

Re: [racket-users] Incorporating Markdown documents into Scribble

It's useful to have this behave like a `#include`. There are settings where you want to have a non-Scribble person author things that go "in the middle"; you want to think of this as just a more convenient way of writing what you'd have written in Scribble. I realize there's presumably a closure i

[racket-users] Incorporating Markdown documents into Scribble

I need a little help with `decode` vs `decode-flow` in Scribble. (Also, this thread is about a question I wasn't able to find answered anywhere, so hopefully it will lead to a solution that others can also use.) Sometimes it's really useful to incorporate Markdown-formatted content into the mid

Re: [racket-users] package manager woes on Windows 10?

I asked students to go to File | Install Package (not the DWIM box). From there, I too get this "inferred package name includes disallowed characters" message as Robby. But that isn't what my student got… So it seems a bit unlikely this is the issue? There is the possibility this is somehow differ

Re: [racket-users] package manager woes on Windows 10?

It's not me doing this, it's a student. I agree this is always a possibility. But note that it also happened to a TA. I suppose they could all have been making the same mistake. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from

Re: [racket-users] package manager woes on Windows 10?

The original student (on Windows 10) has confirmed they were able to install with raco on the shell, which further lends credence to the likelihood that the PM and raco are doing something differently. (I have some other issues w/ the caching and how clearing out the trash doesn't seem to affect t

Re: [racket-users] package manager woes on Windows 10?

Please note that, per my message last night, this is also happening (my TA claims he saw the *identical* text: multiple red lines, etc.) on macOS 11. So it's not just for Windows any more. On Thu, Sep 10, 2020 at 9:20 AM George Neuner wrote: > > On 9/10/2020 7:37 AM, Hendrik Boom wrote: > > On T

Re: [racket-users] package manager woes on Windows 10?

For what it's worth, one of my TAs now informs me he got the same error on macOS 11.0 Beta. He says he just has the standard macOS firewall. He whitelisted DrRacket and it persists. I asked him to try installing Racket 7.7 and installing the package through that; same issue. He was only able to

Re: [racket-users] package manager woes on Windows 10?

Thank you. Can you imagine why the proxy would affect DrRacket but not the Web browser? -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@

Re: [racket-users] locally linked package name doesn't match info collection name

I'm curious why the Package Manager doesn't also show the collection name (or plural)? Wouldn't I need that to trace backwards? "This program in #lang foo is behaving oddly, I wonder what foo's source is" — find the collection in the PM, trace back to the package, locate the source…? -- You recei

[racket-users] locally linked package name doesn't match info collection name

This is almost certainly intended and/or I may have totally misunderstood the semantics of the info file, but this feels a bit confusing: I have a package on my filesystem in the directory mystery-languages-uploader. The "-uploader" part is a local name that's not intended for public consumptio

Re: [racket-users] Re: provide-if-not-defined

Ah, I see, that's a nice idea! One problem is have well over a dozen of these that I want to pass-through, but I suppose I could write a (rename-prefix ...) that turns into a bunch of define's. I'd have to be careful to not miss any. Another issue is that I have to redefine some of the langua

Re: [racket-users] provide-if-not-defined

Thank you both. What I want is something closer to what Oak wrote, but that addresses only *checking*, whereas I also want the convenience of defining the module. So to use Oak's example, I want to be able to write #lang racket/base (provide-if-not-defined + - *) at the top of *all thr

[racket-users] Re: consistent interfaces from multiple files

I realize I could have used `define-language` and `define-extended-language` and friends from Redex, except … `redex-match` works over terms, not over syntax objects. Of course I also can't write (redex-match LANG NON-TERM (term (syntax->datum S))) because TERM is a special form, so it doesn'

[racket-users] provide-if-not-defined

Related to my previous post [ https://groups.google.com/g/racket-users/c/OqyqDFxwhf0], I have several cases where I have this kind of pattern: V1: #lang racket (provide +) V2: #lang racket (provide [rename-out (my-+ +)]) (define my-+ …) Each variant provides some/all primitives directly from

[racket-users] consistent interfaces from multiple files

This may be a somewhat niche request, but hopefully it's just a special case of a common need. I have multiple files, say V1 and V2, that each provide the same surface language constructs – e.g., #%app, some macros, some functions — but of course implemented in different ways. I also have addit

[racket-users] abstraction suggestion?

I'm having some trouble abstracting over this code. Any suggestions? I have numerous files that follow this boilerplate: #lang racket (require ) (provide (rename-out [mod-begin #%module-begin] [ti#%top-interaction])) (define-values (namespaces lang-print-names) )

Re: [racket-users] printing errors

Thank you! Is there a way of further suppressing info? Right now I get output like [image: image.png] ../../make-semantics.rkt:37:13: a: undefined which is a reference to the language implementation file rather than to the program in the language. The programs here are so small that suppressin

Re: [racket-users] printing errors

This is perfect, thanks! Two follow-up questions: 1. The error printer seems to print an extra newline at the end relative to what the port-display-handler (for instance) shows. Is there a way to suppress that? 2. The stack trace seems to be extracted automatically. Is there a way to suppress it

[racket-users] printing errors

Given an exception, is there a way to print the error using Racket's conventional error printing machinery (e.g., in color in DrRacket, etc.), without halting execution? I would like to be able to integrate this with #%printing-module-begin and #%top-interaction. Unfortunately, those by default

[racket-users] namespaces + eval + reader

want to create a namespace for (say) the BSL language in DrRacket. Critically, I need the *reader* to be aligned with this language. Otherwise, small semantic discrepancies creep in. Concrete example: > (define n (make-base-namespace)) > (eval `(require lang/htdp-beginner) n) > (eval `(equal?

[racket-users] telling apart files ending with a newline

Suppose I have two files that are identical, except one ends in a newline and the other does not. If I use `read-line` to read the successive lines of this file, because it swallows the line separators, there is no way to tell them apart. E.g., these two strings "a b" and "a b " read using `

Re: [racket-users] combining require, build-path, and namespaces

Ooh, thank you Oak and Jens Axel! I would never have figured that out. As Matthew's email from Jan 2020 says, having the documentation say something (and, in particular, suggesting the use of `parameterize` to get what many users might expect) would be quite lovely. (Thanks also, Greg.) Shriram

Re: [racket-users] combining require, build-path, and namespaces

Thank you! Would you know why I might get this error: ; require: unknown module ; module name: ; #> (This is from inside a module.) Trying the same at the REPL, I see the same thing: > (define n (make-base-namespace)) > (namespace-require `(file ,(path->string (build-path "wheats" "w1.

[racket-users] combining require, build-path, and namespaces

How I can combine these three? I want to do something like this: (define n (make-base-namespace)) (define p (build-path f)) (eval `(require ,p) n) Racket doesn't like that: bad syntax for require sub-form because p is a path-typed value. Essentially, I want to inject the module at f

Re: [racket-users] Re: Scribble: customizing table borders

That did the trick well enough, thank you!!! (I wouldn't mind a cleaner solution, but it gets the job done for now.) -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email

[racket-users] Scribble: customizing table borders

It *appears* that in Scribble, the color of a table's borders (e.g., bottom-border) is fixed: e.g., 5 generated from a program such as @tabular[#:sep @hspace[2] #:row-properties '(() () bottom-border ()) #:style (style "LongMult" null) I haven't had any luck coming up with the right C

[racket-users] emoji in source code

I wrote the following program: (define /: '😐) which at least on my screen looks like in Aquamacs and in my browser (modulo dark/light mode). However, no matter which mode I use in OS X AND which color mode I use in DrRacket, the emoji just isn't visible: Not the most pressing problem in

[racket-users] nested-flow and inset

My reading of the documentation for `nested-flow` https://docs.racket-lang.org/scribble/core.html#%28def._%28%28lib._scribble%2Fcore..rkt%29._make-nested-flow%29%29 is that I can use 'inset as the first argument. However, when I try to do so, I get a contract error: make-nested-flow: contract v

[racket-users] Gtk initialization failed for display ":0"

I'm running headless Racket from a Docker container for auto-grading assignments in Gradescope. The students are writing BSL programs with 2htdp/image. This does not cause any problems for most of them. Two students, however, get an error in file loading with the error message in the subject l

Re: [racket-users] suppressing parts of Scribble (HTML) output

Oh my gosh, this is *exactly* what I need! Thank you!!! -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. To view this d

[racket-users] suppressing scribble-common.js in Scribble output

How does one suppress scribble-common.js? I really don't understand why the file loads for all Scribble langs — it contains things like search box support for documentation! In addition, it takes over the window.onload, overriding any previous content. About this, it has the following odd rema

[racket-users] suppressing parts of Scribble (HTML) output

I am trying to use Scribble to generate HTML documents (blog-like, but not exactly, so Frog doesn't meet my needs) but would really like to eliminate the material in the left gutter (TOC). (Ideally I'd also like to suppress the author tag.) I've spent some time going through the source of Greg

[racket-users] Gradescope support

If anyone else here is looking for it, the first release of my Gradescope autograding support for Racket is here: https://github.com/shriram/gradescope-racket It's still a work in progress but sufficient to get off the ground (e.g., if I fix nothing it'll still get me through my summer needs).

Re: [racket-users] Re: rackunit and logging

Thanks to a helpful reply from Matthias I came across this posting https://github.com/racket/rackunit/pull/107#issuecomment-480808330 which pointed out "The *test* forms are the things that wrap evaluation, catch errors and continue, etc." If I rewrite the above as (define-test-suite hw (test

[racket-users] foldts-test-suite

The documentation https://docs.racket-lang.org/rackunit/internals.html?q=run-test-case#%28def._%28%28lib._rackunit%2Fmain..rkt%29._foldts-test-suite%29%29 says that `folds-test-suite` can be implemented in terms of `fold-test-results` as follows: (define

Re: [racket-users] Re: rackunit and logging

Sorry to be thinking out loud here… I thought the reason Alex might be using `foldts-test-suite` instead of `fold-test-results` is because the latter automatically runs each test but the former leaves that in programmatic control. I thought this would enable me to catch exceptions, thus (using Ale

Re: [racket-users] rackunit and logging

For those reading this later: there's a bunch of useful information in Alex Harsanyi's blog post and corresponding code: https://alex-hhh.github.io/2019/11/custom-rackunit-test-runner.html https://github.com/alex-hhh/ActivityLog2/blob/master/test/custom-test-runner.rkt Shriram -- You received t

Re: [racket-users] Re: rackunit and logging

Thank you, Alex, this seems to have just the right set of information. I'm curious why you use `foldts-test-suite` instead of `fold-test-results`, whose documentation says "Hence it should be used in preference to foldts-test-suite

Re: [racket-users] Re: rackunit and logging

Thank you all! *Alexis*, thanks for the explanation. *Alex*, thanks for that information. I'm going to go investigate that next. *Dave*, the documentation style is fine, it's sometimes easier to read the doc right next to the implementation. (-: However, I'm not quite sure how even your example

[racket-users] rackunit and logging

I'm trying to understand the design of the logging portion of rackunit: https://docs.racket-lang.org/rackunit/Testing_Utilities.html#%28part._.Logging_.Test_.Results%29 1. The "log" seems to only be a *count*, not the actual rackunit output (as the term "log" would suggest). Since I want t

[racket-users] Re: What does PLT stand for?

Originally it was the Programming Languages Theory group at Rice University. Then, around the time of creation of Racket, the team branched out beyond Theory, so we decided the T might stand also for Technology, Tools, etc. Eventually we decided it just stood for Programming Languages Team. The

[racket-users] running Racket inside gradescope

We expect to use Racket with Gradescope [https://www.gradescope.com/] in the fall. Gradescope will run an autograder for programming assignments, using this specification: https://gradescope-autograders.readthedocs.io/en/latest/ (It's manifest as a Docker container.) Has anyone already set up

[racket-users] embedding Google Forms/YouTube/… in Scribble

It's sometimes useful to embed content like a Google Form (a survey, quiz, etc.) or a YouTube video in a Scribble document. I spent some time searching but couldn't find anything that would do this for me. I've therefore written a little library to help with this: https://github.com/shriram/sc

Re: [racket-users] Re: The case, and a proposal, for elegant syntax in #lang racket2

I agree that struct-copy is almost essential. That's why it's baked into the syntax of Pyret (where we're very sparing in what we provide syntactic surface to). It might be better to just import struct-copy and leave the language-level intact, in the future (if not create a language level that refl

Re: [racket-users] Re: The case, and a proposal, for elegant syntax in #lang racket2

> > > Pyret was a pain. Error messages were not clear and the whole change >> confused students. >> > > Can you elaborate more on this? My personal experience with Pyret is that > it has an exceptionally good error message, except when an internal > error occurs (which should not happen). > IMO, P

Re: [racket-users] Re: The case, and a proposal, for elegant syntax in #lang racket2

To riff on Will's message: In the Bootstrap:Algebra materials, we use Racket syntax because it's a powerful pedagogic device. Recently, for various reasons, we've ported this over to another language called Pyret (while also maintaining the Racke

Re: [racket-users] The case, and a proposal, for elegant syntax in #lang racket2

Another Racketeer here who's been in the community since day 0. We have various views and people in the community. But our commitment to making tools and learning available to all, open to all, and catering to all — what many of us label diversity — is, I hope, demonstrated by our actions. Sev

Re: [racket-users] Re: The case, and a proposal, for elegant syntax in #lang racket2

P4P is also very much "current", as far as I'm concerned. (In fact, I'm quite likely about to use it in a new setting.) Pyret is a parallel branch effort. Pyret is "let's just go all out and design a new syntax". Specifically, I was tired of dealing with people who wouldn't read *How to Design

Re: [racket-users] Announcing Leibniz, a new language in the Racket universe

Yes, this clarifies everything, thanks! Some more comments/thoughts. I would suggest adding a @(table-of-contents) to the top of every page: it helps the reader know what is coming ahead. For instance, it's good for me to know up front that I don't have to understand sec 1 all by myself, because

Re: [racket-users] Announcing Leibniz, a new language in the Racket universe

The Lotka-Volterra example is very helpful, thanks. It is still a bit unclear from the formatting which part is the Leibniz code. Is it the two lines marked pp1 and pp2? Are they literal code? I guess I prefer to use a typewriter face to make verbatim code clear, though that may be at odds with the

[racket-users] RaspberryPi IoT programming with Racket BSL

For those who may not know about this: Matthias Felleisen recently heard about a really cool piece of work by Daniel Brunner and Stephan Brunner on using Racket BSL to program Raspberry Pi systems. Here is a brief blog post that has a link to the paper: http://www.dbrunner.de/2017/04/05/10th-eu

Re: [racket-users] Announcing Leibniz, a new language in the Racket universe

Let me ask a few questions that may nudge you a bit: What is an example of a system you want to model? For instance: Do you want to be able to model simple linear motion? Uniform acceleration? Do you want to be able to model predator-prey? Or epidemic growth? Are these even in the realm of thi

Re: [racket-users] Announcing Leibniz, a new language in the Racket universe

Agreed w/ John. I tried reading the Scribble files in the examples directory but my eyes started to bug out a bit. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email

[racket-users] The 2nd Summit oN Advances in Programming Languages- SNAPL '17

the Asilomar Conference Grounds on the Pacific Ocean just south of Monterey, CA. Ras Bodík and Shriram Krishnamurthi (co-chairs) -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails fr

Re: [racket-users] Scribble: unnumbered and unindexed sections

Just as a note of warning to other readers. I like being able to use #:tag for sections to get human-readable file/directory names. Unfortunately, using the tag prefixes also affects these names. For instance, if you use #:tag "foo", you get a file named "foo.html". But if you use #:tag-prefixes "f

Re: [racket-users] Scribble: unnumbered and unindexed sections

Thanks all for the help. To summarize for the benefit of those who find this thread later: A style of 'unnumbered does the trick. Thus @section[#:style 'unnumbered]{My Section} will list it without giving it a number. As for avoiding duplicate tags, this doesn't appear to be quite right: >

[racket-users] Scribble: unnumbered and unindexed sections

Is there a way to have unnumbered and unindexed section? (Yes, these are different issues.) It would be helpful to have unnumbered sections, à la \[sub]section* in LaTeX. It would be especially helpful to have unindexed sections. The real nuisance I'm trying to avoid is, say I have N sections t

Re: [racket-users] Re: Whalesong instead of Clojurescript

There has indeed not been a lot of activity, but that doesn't mean it isn't functional. I've heard now and then of people using it. It's at least worth a try — a few minutes will let you know if it's suitable for your needs. -- You received this message because you are subscribed to the Google Gr

Re: [racket-users] selective --html-tree in Scribble

On Friday, September 2, 2016 at 2:19:58 PM UTC-4, Matthew Flatt wrote: > Use the 'toc style property for the "Assignments" section. It's not a > great name, but 'toc means "render subsections on separate HTML pages". This is terrific, thanks. Is there a "callee-determines" equivalent to this "cal

[racket-users] Re: Whalesong instead of Clojurescript

On Thursday, August 25, 2016 at 9:53:40 AM UTC-4, tbrooke wrote: > I briefly looked at Whalesong and I was wondering if anyone is using it and > if it is mature and ready to use. I use Clojurescript and it seems to me that > Whalesong should be equivalent with the advantage of allowing me to work

[racket-users] selective --html-tree in Scribble

I want to unfold an HTML tree selectively. Suppose I have a site.scrbl that contains a Web site's information. I want all the top-level sections to be split into individual pages (corresponding to --htmls). But in one particular section (call it "Assignments"), I want each sub-section to have it

Re: [racket-users] Scribble abstraction to attach styles

all UNCOLs fail a > little bit at least -- Matthias > > > > > On May 21, 2015, at 2:19 PM, Shriram Krishnamurthi wrote: > >> Understood. But my understanding of the docs is that it shouldn't do >> that in the first place. >> >> On Thu, May 21, 201

Re: [racket-users] Scribble abstraction to attach styles

o cause the indentation, then something like this will disable the nested > one: > > div.exercise > div.question { padding-left: 0em; } > > ~ben > > On 5/21/2015 2:12 PM, Shriram Krishnamurthi wrote: > > Thanks for these replies. Sorry I'm only now getting to t

Re: [racket-users] Scribble abstraction to attach styles

Thanks for these replies. Sorry I'm only now getting to them: Google failed to notify me of them. The problem with using (nested ...) is that it indents its content even when I don't use the 'inset style. Therefore, if I have (as I do) @exercise{@question{...}} everything in the exercise ends

[racket-users] Scribble abstraction to attach styles

I'm having trouble with the type structure of Scribble and hoping someone can help me get this right. Let's say I want to write content like this: = @exercise{ @question{The expression @code{1 + 2} evaluates to} @answer{ @itemlist[ @item{@code{2}} @item{@code{3}} @item{@code{4}} ] } }

Re: [racket] PLAI WP page scheduled to be deleted

I have at various times had concrete evidence of the book being cited in courses at, or directly used in, each of these institutions (obviously, not necessarily currently): Aarhus Universitet, Adelphi University, Allegheny College, Ben Gurion University, Brigham Young Universit

Re: [racket] Scribble document with accented characters

For the (search engine) record: No matter what I did, I couldn't get Aquamacs to take seriously my request to put the file in UTF-8 format. So I switched from editing in Aquamacs to editing in DrRacket to put on accented character in. When I reloaded the file, Aquamacs was happy to edit in UTF-8,

[racket] Scribble document with accented characters

What's the proper way to use accented characters in a Scribble document? For instance, if I want a ä? Simply writing that character results in the error Package inputenc Error: Unicode char \u8: not set up for use with LaTeX. on OS X using the default latex (/usr/texbin/latex). Thanks, Shriram

Re: [racket] Holzweg-PLAI. Not doable in DrRacket 6.0.1?

Hi -- thanks for the report. However, you should be using plai-typed, not plai. You can find plai-typed here: http://cs.brown.edu/courses/cs173/2012/lang/ If you install and run with plai-typed instead of plai, you will find that the colon-endowed syntax works just fine (I just tested the very c

Re: [racket] boolean in PLAI

Is this the sort of problem you're talking about? http://cs.brown.edu/courses/cs173/2012/book/Everything__We_Will_Say__About_Parsing.html#(part._.Types_for_.Parsing) Racket Users list: http://lists.racket-lang.org/users

Re: [racket] An elm-like racket language?

other libraries. This would make it more modular, >> easier to understand and maintain, etc. >> >> Greg >> >> PS. As far as I know the GUI bindings do still work... :-) >> >> >> >> On Tue, Nov 12, 2013 at 10:31 PM, Shriram Krishnamurthi >> wrote:

Re: [racket] An elm-like racket language?

be able to use the same update mechanism even without using #lang FrTime. > > Are there any particular docs and/or code I should read (aside from the > basic docs online and your paper)? Any tips? > > Philip Monk > > > On Tue, Nov 12, 2013 at 2:54 PM, Shriram Krishnamurthi

Re: [racket] An elm-like racket language?

Hi Dan, I don't think anyone is using FrTime, because nobody in the Racket community really expressed much interest in it, so it didn't gain enough momentum. I concluded that the kind of person who likes Racket is perfectly happy with Racket's existing GUI libraries, and FrTime was solving a non-p

Re: [racket] An elm-like racket language?

Elm was (partially) inspired by Flapjax, which is a direct descendant of FrTime. So the Elm-like language for Racket _is_ FrTime. Perhaps you have a different question? Maybe I've completely misunderstood your question! Racket Users list: http://lists.racket-lang.org/users

Re: [racket] Any online courses by the PLT group?

Right. You should absolutely look at Matthew's materials. But also note that Joe and I designed our course to be archival so that anyone who wants to can re-run the course for themselves even after it was over (as it is). So you may benefit from pursuing both. Racket Users li

Re: [racket] Racket/Bootstrap used for K-12 government sanctioned education?

Grant, what do you mean by "government sanctioned"? And why are you asking? On Mon, Oct 7, 2013 at 2:38 PM, Grant Rettke wrote: > Hi, > > Anyone used Racket or Bootstrap for a government sanctioned K-12 > educational program? > > Best wishes, > > -- > Grant Rettke | ACM, AMA, COG, IEEE > gret...@

Re: [racket] Code Reuse, Object Oriented vs Functional

On Fri, Jun 21, 2013 at 2:57 PM, Todd O'Bryan wrote: > Whoa! I had no idea that Shriram and the rest of the Rice group were > the impetus for the distillation/clarification and naming of "The > Expression Problem." To set the record straight, since this is a public forum: We (Matthias and I) cal

Re: [racket] Doing collision detection in universe.ss

Yaron, this summer my students, Kathi Fisler, and I built a block-based, functional language with types (expressed as colors) and testing. It runs in the browser, uses the WeScheme runtime and can express most Bootstrap programs. It needs more polish before we can release it to the world. We would

Re: [racket] tutorials on using redex

Currently: indirectly, yes, directly, no. But I plan to write up some material that will make the transition from PLAI 2/e to SEwPR. Half the problem is one of notation, which can be explained. But PLAI covers explicitly many things that SEwPR seewps under the rug by virtue of assuming you alrea

Re: [racket] tutorials on using redex

Second edition, now newer and better, currently being written (but most of the way there): http://www.cs.brown.edu/courses/cs173/2012/book/ On Sun, Nov 4, 2012 at 9:55 AM, Asumu Takikawa wrote: > On 2012-11-02 12:21:25 -0700, geb a wrote: > > I've been working with redex (a little bit) trying

Re: [racket] [plt-edu-talk] Does a Scheme procedure "return" a value?

I concur w/ Joe that there's something to be said for using "returns" since you're presumably writing documentation that you want non-Racketeer to read and immediately understand -- your goal here (presumably) isn't to be pedantic. This is in contrast to a programming or programming languages cour

Re: [racket] [plt-edu-talk] Does a Scheme procedure "return" a value?

The function phone-directory consumes a name, then produces/computes a phone number. On Sat, Sep 8, 2012 at 11:26 AM, Richard Cleis wrote: > I am writing documentation. What are acceptable words for the following > brackets? > > The function f [what verbs are ok?] a name, then [what about here?]

[racket] scribbling a stand-alone scribble/lp file

It also appears that one cannot scribble a stand-alone scribble/lp file: it produces dynamic-require: name is not provided name: 'doc ... (This, for instance, is scribbling the very example in http://docs.racket-lang.org/scribble/lp.html .) But scribbling the wrapper seems to work fine. If tr

[racket] scribble/lp issues

I'm trying to start using scribble/lp and ran into some issues. 1. When I switch a buffer from scribble/base to scribble/lp, if I have no chunks I get an error. Why is this? It certainly isn't needed for typesetting; for assembling code during execution, when there are no chunk's why isn't it eq

[racket] on-line programming languages course

, please post them here: https://plus.google.com/117185293319274359863/posts/9rfginQ3w82 I look forward to seeing you in class! Shriram Krishnamurthi, Instructor Joe Gibbs Politz, Associate Instructor Racket Users list: http://lists.racket-lang.org/users

Re: [racket] Congratulations to Shriram: Milner Young Researcher Award

Thank you all for your kind words, both public and private. You know the line about standing on shoulders, but it turns out that if the shoulders you stand on are sufficiently tall, mere crouching is sufficient. Those shoulders belong not only to Matthias but also especially to Robby Findler, Cor

Re: [racket] The value of a language

The Scribble language is a great instance of this, though unfortunately there isn't yet really an easily accessible document that lays out the argument crisply for a lay audience. But if you can persist a little, try the Scribble ICFP paper. Racket Users list: http://lists

[racket] feeding trolls

Hi all, We have until now never barred anyone from this mailing list. We like to keep it that way. Eli Barzilay and I talk about such issues periodically, and have been doing so a LOT lately. Trolls are obviously problematic. We're starting to get unsubscribe messages, which does not help -- t

Re: [racket] Engineering Tradeoffs of ANF transforms and the Stateless Server

That's a fine position in theory, but I doubt it works well in practice even today. When Jay talks about 3-4 GB, he doesn't mean over the course of a conference -- that could sometimes add up in just a few hours. No amount of cheap RAM is going to combat that. But, as I said, in an Ajax world th

Re: [racket] Engineering Tradeoffs of ANF transforms and the Stateless Server

On Fri, Dec 30, 2011 at 2:54 PM, Noel Welsh wrote: > On Tue, Dec 27, 2011 at 9:26 PM, Galler wrote: >> I note that no one has discussed throwing a significant amount of physical >> memory at the problem. >> >> Empirically, is that because garbage-collection of a large heap creates its >> own perf

Re: [racket] formlets with radio button & checkbox example?

Let's just agree to ignore the troll, please. Racket Users list: http://lists.racket-lang.org/users

Re: [racket] Racket documentation for web development is just awful!

Hi R. Noob, > Do the URLs of pages that use continuation > mechanism have to look ugly and cryptic? Yes they do. The URLs are ugly *because* they are cryptic. They are cryptic because it is a route to system security. If they were pretty, people could guess them, and that would adversely affec

Re: [racket] Units/measures library

DSSSL (-: (Since I believe Bigloo and/or Gambit implemented DSSSL, lurking in their implementations is code that does this...) _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users

Re: [racket] Why internal definitions?

> Your question suggests that you come from a teaching language > background where we introduce only local definitions. In ISL > and ISL+lambda, the use of local makes it easier to move global > transformations into a local scope and vice versa. Most importantly, > these movement preserve the exact

Re: [racket] Sending a method as a symbol

Right. In other words, Racket would become a true scripting language. <-; On Tue, Nov 15, 2011 at 3:14 PM, Grant Rettke wrote: > On Mon, Nov 14, 2011 at 8:32 AM, Matthew Flatt wrote: >> At Sun, 13 Nov 2011 21:00:55 +, "nicolas.o...@gmail.com" wrote: >>> Is there a function to send to a clas

Re: [racket] DrRacket needs work

Right. A Racket Declaration of Independence. (-: _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users

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