It's been a while since I created a new package, but as of ~1 year ago,
another advantage (or perhaps the same, from a different angle) of the
multi-collection format was that it allowed third parties to add modules to
the collections I defined.
Eric
On Sat, Oct 9, 2021, 1:58 PM 'Joel Dueck' via
Hi Dominik,
If you put the hex number in a string, many of the formatting functions in
the Scribble manual, section 4.2.1.4 will work:
(proc-doc/names
name
(->* () (integer?) void?)
(()
((argument #,(racketvalfont "#x1f"
@{ some description }))
Eric
On Fri, Sep 18, 2020 a
AFK, but it looks like the contract and function on your define/contract
are swapped. Maybe the contract check on the one-arg call sets the
parameter and then hilarity ensues?
Eric
On Mon, Mar 23, 2020, 12:36 PM David Storrs wrote:
> (define/contract (foo x)
> (-> boolean? any)
> 'ok)
>
>
o compile one module wouldn't
inconvenience me terribly, but it doesn't take much imagination to find a
situation where it would, and I have no idea how any of these numbers will
scale.
Eric
On Sat, Mar 14, 2020 at 3:28 PM Eric Griffis wrote:
> Alright, I re-discovered Ryan C
Hello,
I'm pleased to announce the initial release of *Template Macros*, a Racket
library that dramatically simplifies the generation of meta-program code.
https://github.com/dedbox/racket-template
Template macros infiltrate the spaces under-served by Racket's existing
pattern-based and procedur
On Sat, Mar 14, 2020 at 10:25 PM Hendrik Boom wrote:
>
> There's a port of glm in the Racket package library.
> Is that the same one? If not, is it also that huge?
Same repository, different branch. The master branch, which is a
couple months old now, implements the matrix and vector types on to
line these because they keep the written code small and the
generated code fast.
I guess the next step is to anti-inlinedefine-dvec4-unop and
define-dvec4-binop, maybe eliminate some define/contract's, and re-profile.
Eric
On Friday, March 13, 2020 at 6:20:47 PM UTC-7, Eric Griffis wrote:
&
Hello,
I've got a package that generates (i.e., expands into) a ridiculous
amount of Racket code. I'd like to generate an unbelievable amount of
code, but things have already slowed down a lot.
At this point, I'm generating 20% of a massive code base and it takes
4 minutes to compile (i.e., raco
Hi Sage,
This is pretty cool. With a non-OOP option on the table, I might
finally get around to working on an IMGUI-like for Racket.
Have you thought about a reader extension to compress the notation?
The `stateful-cell` function kinda acts like a box and kinda looks
like a `syntax` (or `quote-sy
Hi Hendrick,
There's always --force.
raco pkg remove --force glm
This works fine when I know I'm going to reinstall the package before
using its dependents.
Eric
On Thu, Jan 23, 2020 at 6:34 AM Hendrik Boom wrote:
>
> My installation of OpenGL Mathematics (GLM) for Racket is defective
> in th
Hi Jack,
It can be done with make-rename-transformer.
(define (foo? obj) (equal? obj foo-impl))
> (define foo-widget list)
>
> (define/contract (foo-impl _) (-> number? symbol?) 'a-foo)
>
> (define-match-expander foo
> (syntax-parser [(_ widget) #'(? foo? (app foo-widget widget))])
> (make-re
Unsafe operations are usually defined externally, like in a C extension,
where safety is harder to guarantee and module hierarchies are less
idiomatic. The "unsafe" moniker is a standard warning that you are
responsible for understanding the underlying implementation and calling
into it responsibly
un, Nov 10, 2019 at 12:19 PM Christopher Lemmer Webber <
cweb...@dustycloud.org> wrote:
> Hi Eric! Thanks very much for the reply.
>
> Eric Griffis writes:
>
> >> It appears there must be; when I look at `build-program` in
> >> sandbox.rkt it also looks like it
On Sun, Nov 10, 2019 at 6:45 AM Christopher Lemmer Webber <
cweb...@dustycloud.org> wrote:
>
> It sounds like what I want is the case of the export.
I'll run with this.
> I guess a question remaining then is: if I'm doing this kind of dynamic
> import of the module, is there a way to require from
Maybe pipe ports?
https://docs.racket-lang.org/reference/pipeports.html
Eric
On Thu, Oct 24, 2019, 11:28 PM David Storrs wrote:
> I saw something in the Reference about bi-directional {pipes |
> channels | ???} with a constructor that returned two values, A and B,
> where data put onto A coul
Hi Cistian,
Both of your examples are hygienic, in the sense that neither actually
do anything that violates macro hygiene.
When `a_definition` is defined in the module context (i.e., the
"global namespace"), it has the same scope as the `a_definition` used
inside `my-macro`. (There's more to it,
> Why implement these projects in Algebraic Racket?
Good question -- not so easy to answer cleanly. Here's a smattering.
I created Algebraic Racket to make functional meta-programming in Racket
more enjoyable. My talk will demonstrate what I mean by that and why it
matters in practice.
The packa
On Thu, Jun 27, 2019 at 9:12 PM Daniel Prager wrote:
>
> Hi Eric
>
> They all sound great.
>
> I'm particularly interested in the first two, and was very impressed by the
> Diagram project gallery, and it would be great to see in Racket.
Cool! Thanks for the comments.
> Quick question: Why Alge
Hello everyone,
Over the next few months, I will be breaking ground on three new projects.
== A diagramming library ==
An Algebraic Racket port of Haskell's diagrams library:
https://archives.haskell.org/projects.haskell.org/diagrams/
I love this design. It's like Pict, but the API is st
On Thu, Jun 27, 2019 at 11:56 AM David Storrs
wrote:
>
> Suppose instead I wanted to have a pattern like so (this does not work):
>
> (match (vector 1 2 3 4)
> [(vector a (app + b ..2 x) c) (list a b c x)]
> ; => '(1 (2 3) 4 5)) ; NB: does not work
We have a few problems here.
The pattern (
This is the kind of stuff I look for in my Twitter feed. If I knew how
to subscribe to updates, I would.
Eric
On Fri, Jun 21, 2019 at 1:16 AM Dexter Lagan wrote:
>
> Once my git repos will be presentable, you can be sure I'll show it all to
> HN. I'm a beyond-full-time Racket programmer and
On Thu, Jun 6, 2019 at 12:19 AM Fastmail wrote:
>
> The `implement` macro needs to place its identifiers (say, `say`) inside
> the lexical context of the calling site, so that they bind other code
> coming in from the calling site (for instance, `(say 'hello)`).
Thanks! This was incredibly helpfu
sets go from intersecting to disjoint
or sharing only a macro scope.
On Mon, Jun 3, 2019, 11:52 AM Eric Griffis wrote:
> Several times now, I've run into one or another form of the following
> problem:
>
> Say I want to build primitives to
>
>1. declare an "i
Several times now, I've run into one or another form of the following
problem:
Say I want to build primitives to
1. declare an "interface" as a list of names, and
2. implement and use those names at run time in a limited scope
Concretely, I want to run the following code:
(interface Speak
I have a macro that creates transformer bindings at phases 0 and 1:
(define-syntax (f stx)
(with-syntax ([name (cadr (syntax-e stx))])
#'(begin
(define-syntax name (syntax-id-rules () [_ 1]))
(begin-for-syntax (define-syntax name (syntax-id-rules () [_
2]))
Normally, thi
On Tue, Apr 2, 2019 at 1:04 PM Tom Gillespie wrote:
>
> Are you using emacs racket-mode?
I am, almost exclusively. Exception and check failure locations can be a
pain, but they work in general.
> On Tue, Apr 2, 2019 at 3:41 PM zeRusski wrote:
>>
>> If I have many test chunks spread around my co
I am pleased to announce Algebraic Racket, an extension for algebraic
structures in untyped Racket.
https://github.com/dedbox/racket-algebraic
Algebraic structures provide the operational under-pinnings for algebraic
data types. What's missing is the static typing constraints.
The initial releas
On Mon, Mar 11, 2019 at 12:04 PM Brian Adkins wrote:
>
> Hmm... maybe the problem was just my lack of shell skills. I think the
> following works:
>
> raco make -j 8 */*.rkt
This will only make the rkt files in subdirectories of the current
working directory, excluding sub-subdirectories and th
My bad. I confused ordinary with generic.
On Tue, Jan 8, 2019, 9:47 AM Eric Griffis Apologies for the backtracking, but I'm still having trouble understanding
> before/after/between and ordinary function composition. For non-method
> functions, what's the difference?
>
> Al
Apologies for the backtracking, but I'm still having trouble understanding
before/after/between and ordinary function composition. For non-method
functions, what's the difference?
Also, I'd never heard of these functions as a Perl dev. A quick search
turns up Moose. Is that what you're talking abo
On Mon, Oct 8, 2018 at 5:40 PM Matthew Flatt wrote:
>
> --redirect https://docs.racket-lang.org/local-redirect/
This works. Thanks!
Eric
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On Mon, Oct 8, 2018 at 1:07 PM Greg Hendershott
wrote:
>
> Is this for .md or .scrbl sources?
For .scrbl sources.
> If scribble: It's been some years since I worked on this, but at a
> quick glance Frog is running Scribble with --redirect-main
> http://docs.racket-lang.org/
>
>
> https://gi
uld probably be nice to update the docs.racket-lang.org URL
> > to use https, if that's an easy PR you wanted to do?
> >
> > On Mon, Oct 8, 2018 at 2:50 PM Eric Griffis wrote:
> >>
> >> My frog-generated blog is almost ready, but there's one detail stopping
My frog-generated blog is almost ready, but there's one detail stopping
the show:
Is there a way to make frog link to docs.racket-lang.org for all scribble
cross-references?
Exports from the "special" modules (racket/base, racket, ...) already
point to docs.racket-lang.org, but cross-referencing
Thanks for the crisp explanation, Jos. This is exactly my concern.
Eric
On Sun, Sep 23, 2018, 2:38 PM Jos Koot wrote:
> Forgot to include the users group.
>
> -Original Message-
> From: Jos Koot [mailto:jos.k...@gmail.com]
> Sent: 23 September 2018 21:37
> To: 'Tomasz Rola'
> Subject:
A few months ago, I was similarly confused. Here's what I remember
learning since then.
Let's call the character-level syntax of a language *concrete* and any
higher-level syntax *abstract*. By these definitions, a *parser* makes
concrete syntax abstract, and an *interpreter* translates one piece
>
>
> On May 22, 2018, at 7:29 AM, Eric Griffis wrote:
>
> Here's a variety of small examples.
>
>
>
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On Mon, May 21, 2018 at 11:21 AM Jay McCarthy
wrote:
> This is very cute! Can you point to a fun example? I looked through
> the repo and it wasn't obvious where some tests and examples were.
>
> Jay
>
Here's a variety of small examples.
Sometimes, I just want to wait until a bunch of stuff is
Hi everyone,
I would like to announce the initial release of event-lang, an
experimental Racket library that simplifies the creation of complex
synchronizable events.
https://pkgd.racket-lang.org/pkgn/package/event-lang
Event-lang provides a primitive expression lifting form,
> (pure 123)
#
Hello,
I'm making composite picts in my Scribble docs and am looking for a clean
way to keep references to sub-picts around for helper functions to draw
lines between. A struct with the `prop:pict-convertible` property would
suffice, but `raco setup` gives an error.
Given this struct definition:
The `struct` form is defined in `struct.rkt` [1]. As you can see, `struct`
wraps `define-struct/derived` [2], which uses many things exported from
`struct.c` [3]. The "Inside: Racket C API" doc [5] describes some of these
functions -- see section 16.
On the matter of structs being essentially vect
On Wed, Mar 21, 2018 at 4:43 PM Alexis King wrote:
> > On Mar 21, 2018, at 15:32, Eric Griffis wrote:
> >
> > This would be a code smell if I didn't trust that our Racket ancestors
> > knew what they were doing, so the notion of "fixing" structs (o
I bump into struct subtleties all the time. For example, my attempts to
#:auto always degenerate into custom constructor procedures; This usually
involves #:constructor-name and #:omit-define-syntaxes, which might not be
a big deal if I had a solid understanding of what these flags actually do.
So
rent)
> (dump-struct-info point)
(GOT
(#
#
#
(# # #)
(# #f #f)
#t))
```
Eric
On Sat, Mar 17, 2018 at 8:15 PM Kevin Forchione wrote:
>
>
> > On Mar 17, 2018, at 9:24 AM, Eric Griffis wrote:
> >
> > How about a list of identifiers bound to getters or setter
How about a list of identifiers bound to getters or setters? The
`extract-struct-info` procedure in Section 5.7 of the Racket Reference
appears to give you that.
Eric
On Fri, Mar 16, 2018 at 2:56 PM Kevin Forchione wrote:
>
>
> > On Mar 16, 2018, at 2:38 PM, Kevin Forchione wrote:
> >
> > Hi
On Wednesday, March 14, 2018 at 3:14:34 PM UTC-7, Robby Findler wrote:
>
> I usually use metafunctions for that purpose. It might be nice if there
> were more such functions built into redex that came with their own renders,
> I guess.
>
>
More than once, I've gotten stuck typesetting in Redex a
On Thu, Oct 12, 2017 at 2:27 PM Andrew Gwozdziewycz
wrote:
> I love seeing all of these project ideas, but I really don't think
> Racket needs a "killer app." I think what it needs is the people
> passionate about it building tools in it, and *using* those tools in
> the work place, and sharing t
On Thu, Oct 12, 2017 at 9:31 AM David Storrs wrote:
> My suggestion would be that the single largest thing that would make
> Racket take off is if it could become a replacement for Javascript.
RacketScript Playground does not optimize tail calls. If it turned ES6
strict mode on, and if strict m
On Wed, Oct 11, 2017 at 2:58 PM Neil Van Dyke wrote:
>
> * Being there soon with a Web Assembly and HTML5 plus server full-stack
> story, in case developers respond favorably to that.
>
Web back-ends are my wheelhouse. It sure would make my professional life
easier... Not gonna lie, this isn't s
; by looking there.
>
> —
> William J. Bowman
>
> > On Oct 11, 2017, at 10:12 PM, Eric Griffis wrote:
> >
> > Hello,
> >
> > My name is Eric and I love Racket.
> >
> > I am 39 years old and have been writing software for 30 years. I studied
>
Hello,
My name is Eric and I love Racket.
I am 39 years old and have been writing software for 30 years. I studied
metaprogramming and taught programming languages as a grad student. My sole
academic publication is on semantics and provenance for distributed data
science tools. These days, I t
On Wednesday, May 3, 2017 at 3:04:20 PM UTC-7, Ryan Culpepper wrote:
> On 5/3/17 10:41 PM, Eric Griffis wrote:
> > Hello,
> >
> > I'm having trouble catching "terminate break" exceptions when combining
> > break-thread with thread-wai
Hello,
I'm having trouble catching "terminate break" exceptions when combining
break-thread with thread-wait.
MWE 1:
(with-handlers ([exn:break:terminate? writeln])
(let ([t (thread (lambda () (thread-wait (current-thread])
(break-thread t 'terminate)
(thread-wait t)))
MW
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