well, I don't know where the myth comes from that design and coding and
debugging can be separated, but after 20+ years as a software designer and
designer trainer in various companies ranging from a very few to several
thousand developers, I've yet to see any (commercial, I'm not talking about
The serve/servlet function has several flags that allude to the ability to
serve static files (#:extra-files-paths, etc.). However, nowhere in that
documentation does it say under what circumstances the web-server serves
content from that pool of files. After much struggling and cursing, I fina
I've been seeing the examples of Racket to make a server, and although I
learned a lot, I'd love to know how to actually launch it so, for example, a
friend can see my page from his house.
For the best example, let's say i have the Hello World server, what changes do
i need to make so someone
No, not just giving a spec to your programmers. More importantly, give them
a design! This consists of several layers. At the toplevel a spec telling
how things will appear to the future users, or better a user documentation
(which is tricky, because at this stage you have to be aware that you must
To skip iterations, you want to use the #:when or #:unless for-clauses. In your
first example, you should write
(for/list ([i '(1 2 3 4 5)]
#:when (even? i))
(* i 100))
Your second wish is less doable in the current state of things. I have a
library on github [1] that allows you to
On 3/21/13 6:55 PM, Tim Nelson wrote:
(1) How can I *not* add a hash entry for a given iteration?
When I use for/list, can I abuse the nature of empty and append* (I
cringe as I write this):
(append* (for/list ([i '(1 2 3 4 5)])
(cond [(even? i) (list (* i 100))]
Dear All,
I've recently started hacking Racket again, and am loving the for/*
constructs.
Awesome stuff. However, I have two questions about for/hash.
(1) How can I *not* add a hash entry for a given iteration?
When I use for/list, can I abuse the nature of empty and append* (I cringe
as I write
I guess that `scribble --pdf' normally works for you, and
scribble --latex example_paper2.scrbl
similarly hangs?
Does interrupting Scribble with Ctl-C provide a stack trace?
At Thu, 21 Mar 2013 16:30:48 -0400, "George Rudolph" wrote:
> Matt,
> I am running Racket 5.3.1 on Windows 7.
>
> W
Matt,
I am running Racket 5.3.1 on Windows 7.
When I include the style parameter as you have shown, either in your document
or mine:
1. command line
scribble example_paper2.scrbl
generates the expected html document.
2. command line
scribble --pdf example_paper2.scrbl
hangs.
Geo
On Thu, Mar 21, 2013 at 12:16:55PM -0400, Ray Racine wrote:
> Ancillary story.
>
> On one occasion I did do a detailed business rule design to the extant of
> constructing a full on Zed document. In this case there were 10-15K lines
> of completely opaque RPG code dealing with pricing. Not a liv
http://en.wikipedia.org/wiki/Z_notation
Robby
On Thu, Mar 21, 2013 at 11:30 AM, Mike Eggleston wrote:
> In the most recent (that I've read) messsage in the "programming quote"
> there is a mention of a "zed document". What is a "zed document"?
>
> Mike
>
> Racket Users
In the most recent (that I've read) messsage in the "programming quote"
there is a mention of a "zed document". What is a "zed document"?
Mike
Racket Users list:
http://lists.racket-lang.org/users
Ancillary story.
On one occasion I did do a detailed business rule design to the extant of
constructing a full on Zed document. In this case there were 10-15K lines
of completely opaque RPG code dealing with pricing. Not a living soul on
this planet understood how pails, buckets, gobs, and dump
FWIW I recall getting confused by this too. (But unlike you, I haven't
detoured at the time to figure out exactly what's going on; instead
I've resorted to `rm -rf compiled/` and resumed whatever I was trying
to get done).
> So the take away is that if I want my running system to represent the
> c
On Thu, Mar 21, 2013 at 10:42 AM, Eric Dobson wrote:
> I am under the assumption that the compiled directory is just a cache
> of the byte code version of the compiled source code, and that racket
> should use the source code when ever that cache is invalid. This is
> currently not true, as my exa
I am under the assumption that the compiled directory is just a cache
of the byte code version of the compiled source code, and that racket
should use the source code when ever that cache is invalid. This is
currently not true, as my examples show, yet racket does work to make
it mostly true. So my
My experience is the same. But try to explain to a program or project manager
that at least four things gradually change to complete a project: design, code,
tests, and docs. I am no longer expecting to ever work on a project where the
leaders do not insist each of those is a milestone completed
You can use a little 'preload' script:
wrap-compile.rkt
#lang racket
(require compiler/cm)
(current-load/use-compiled
(make-compilation-manager-load/use-compiled-handler))
and run with racket -t wrap-compile.rkt
I would really love to see this functionality as a command line option to
the co
raco make is a command-line tool.
Are you maybe asking for a command-line switch to racket to effectively run
'raco make' before requiring the file? (You can do that already with
careful use of -e, of course, but maybe you want something shorter.)
Robby
On Thu, Mar 21, 2013 at 10:31 AM, Eric Do
So anyone who just uses the command line tools is out of luck? I like
my build system to be correct, and it seems weird that there is work
to make sure the right zo file is matched with the source file but
that it is incorrect in some simple cases.
On Thu, Mar 21, 2013 at 8:19 AM, Robby Findler
w
Or use DrRacket and turn on the auto compilation feature. Or set up
compiler/cm yourself to do that.
Robby
On Thu, Mar 21, 2013 at 10:16 AM, Eric Dobson wrote:
> That doesn't explain why I can get the same behavior as the macro with
> a function call, probably inlining is responsible for that t
Pushed to the git repo.
At Thu, 21 Mar 2013 07:19:15 -0600, Matthew Flatt wrote:
> At Wed, 20 Mar 2013 13:27:02 -0600, Matias Eyzaguirre wrote:
> > As per the pattern grammer in the reference guide, I can use syntax
> > case to match against vectors, lists, and prefab structures [...] But
> > I ca
That doesn't explain why I can get the same behavior as the macro with
a function call, probably inlining is responsible for that though.
So the take away is that if I want my running system to represent the
current state of the source files I either need to run raco make every
single time, or nev
A few minutes ago, Jay McCarthy wrote:
> The change to eli-tester is to have it log its tests so that they
> will be counted by the raco test usage. Similarly, the change to
> rackunit is just to log the tests, not print anything.
But assuming that `raco test' still just runs the code, then test
f
The change to eli-tester is to have it log its tests so that they will
be counted by the raco test usage. Similarly, the change to rackunit
is just to log the tests, not print anything.
On Thu, Mar 21, 2013 at 7:24 AM, Eli Barzilay wrote:
> 20 minutes ago, Jay McCarthy wrote:
>> I just pushed thi
20 minutes ago, Jay McCarthy wrote:
> I just pushed this and made rackunit, eli-tester, and raco test use
> it.
My tester shows the N/M failures message and throws it as an error
anyway. So changing it sounds redundant.
--
((lambda (x) (x x)) (lambda (x) (x x))) Eli Barzilay:
At Wed, 20 Mar 2013 13:27:02 -0600, Matias Eyzaguirre wrote:
> As per the pattern grammer in the reference guide, I can use syntax
> case to match against vectors, lists, and prefab structures [...] But
> I cannot pattern match inside of the box itself.
> [...]
> Why is this? It's my understanding
I just pushed this and made rackunit, eli-tester, and raco test use it.
On Thu, Mar 21, 2013 at 1:41 AM, Matthias Felleisen
wrote:
>
> I like the idea of an optional N/M passed message that could also be used in
> raco test to signal a status. If someone could take on this task, that would
> be w
#lang scribble/lp
I've been to write some macros but I've run into some rather annoying
limitations of syntax-case. They all involve deconstructing/pattern-matching
literal boxes and literal hash tables. As per the pattern grammer in the
reference guide, I can use syntax case to match against vect
The difference lies in the method how racket and raco make check for
changes.
- racket only looks at each individual file's timestamp source and .zo
timestamp and uses whichever is never.
- raco make always checks if the file has changed or any of its
dependencies has changed to decide if it
I like the idea of an optional N/M passed message that could also be used in
raco test to signal a status. If someone could take on this task, that would be
wonderful.
On Mar 21, 2013, at 1:22 AM, Robby Findler wrote:
> I didn't mean to suggest obligatory output.
>
>
> On Wed, Mar 20, 20
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