Another approach might be to use multiple editor-snip%
https://docs.racket-lang.org/gui/editor-snip_.html
within a pasteboard% https://docs.racket-lang.org/gui/pasteboard_.html
Or possibly together with other snip instances, I currently don't have the
time to experiment with it
and no experience
yes it works again!
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> I think you probably went to www.racket-news.com, but you should go to
> racket-news.com (without the www) instead.
>
With or without www I get a certificate error, when I ignore the
certificate I get a 502 from gitlab.
With different browsers and curl all give me the same responses.
Does
When I ignore the certificate error I get a gitlab styled 502 response code.
I wanted to read the news so I found the gitlab repository and within it
this markdown file:
https://gitlab.com/racket-news/racket-news.gitlab.io/-/blob/master/_src/posts/2020-07-06-issue34.md
Posting this in case other
I am getting an error message for the https certificate:
Websites prove their identity via certificates. Firefox does not trust this
> site because it uses a certificate that is not valid for racket-news.com.
> The certificate is only valid for the following names: *.gitlab.io,
> gitlab.io
>
Declaring the dependencies explicitly is good in a lot of cases, but I
guess there are cases where it is unnecessary.
If you do decide to create the uber package you can create the info.rkt,
`raco pkg install` the package and then use `raco setup --fix-pkg-deps
--unused-pkg-deps ` to let setup
> What I'd like to do is to create a personal catalog that represents the
> packages I currently have installed, but it doesn't appear there's a super
> easy `raco pkg` command to do that - I still need to research a bit.
>
raco pkg archive --help
Create catalog from installed packages
Usage:
I struggled with a similar case, in my case the easiest/simplest solution
was to use:
@var[identifier] instead of @racket[identifier]
(this works well for function arguments, but might not work for your case)
https://docs.racket-lang.org/scribble/scribble_manual_code.html?q=var#%28form._%28%28lib.
This cuts the time down from 6-7 seconds to 2-3 seconds for me, that is
great, thank you!
previous:
time raco setup --doc-index --no-pkg-deps layout 6.85s user 1.29s system
209% cpu 3.888 total
now:
raco setup -n -j 1 --doc-index --no-pkg-deps --avoid-main layout 2.31s
user 0.47s system 99%
Hello,
I like that I can run:
raco setup --doc-index my-collection-name
and it builds the documentation and makes it searchable on my local machine.
But I was wondering if there is a way to speed-up/skip some of the usual
setup stuff that happens before building the documentation?
Should I use
Hello,
searching through a bunch of different packages I noticed that the
code/download links are quite inconsistent.
For some packages there is a download button clicking that button does
nothing (in firefox) because it contains a git:// protocol url, here is an
example package:
https://pkgs.
I think pollen uses racket's compiled directories to store some of its own
cached/generated code, maybe a similar technique could be helpful for you.
Do you want to create submodules for arbitrary modules or only for modules
using a certain library or language?
When its the latter I think its a
You could use the nix package manager https://nixos.org/nix/ it runs on
many linux platforms and macOS.
It has predefined racket and racket-minimal packages, you can define
derived versions of those packages and adapt them to your needs.
It allows you to easily switch between different packages,
And use contracts.
I can't claim that all my code uses contracts everywhere, but when I
encounter unexpected/bewildering behavior I add contracts to break those
chains of "piped functions".
You can start with define/contract for ease of use.
Later on you can put functions that belong together i
Hi,
have you tried using read-bitmap?
https://docs.racket-lang.org/draw/Drawing_Functions.html?q=read-bitmap#%28def._%28%28lib._racket%2Fdraw..rkt%29._read-bitmap%29%29
Personally I have only used the second constructor that takes a parameter
named "in" here:
https://docs.racket-lang.org/draw/b
Hi Sid,
this looks like a nice, clean, simple to use interface,
that could replace some of my adhoc tree traversals hidden within,
some of my code.
I am looking forward to playing around with it and seeing where I can use
it, thank you for creating it!
Have a great day!
Simon
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Yes, when I put on my pragmatic thinking hat, I certainly agree with you.
But it also makes me think about whether I should create a utility library
which does a more abstracted window placement and restoring.
That library would care more about logical "human" positioning and for
example snap to
created an issue for this:
https://github.com/racket/gui/issues/149
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To
Hello,
call-with-output-file and copy-port makes this task easier.
Took me a while before I found out about copy-port, too.
Maybe there are a few places in the documentation that should have explicit
mentions of it.
#lang racket
(require net/url)
(define/contract (download-file uri save-as-pat
Hello,
I am writing a gui application it is supposed to save the position of the
window and upon restart restore the position.
For this I get the position via overriding the on-move method of frame%.
Upon restoring I call (send frame move x y).
The problem is that on my system (linux manjaro xfc
I have no experience with Redex (it is one of the things I want to get more
familiar with in the future), but I happened to watch this talk:
"Finding bugs without running or even looking at code" by Jay Parlar
https://www.youtube.com/watch?v=FvNRlE4E9QQ
Maybe a tool like this is interesting to yo
Thank you, for creating this!
Currently I am still using opengl for my projects, until I have time to
learn vulkan and port to it.
I created a pull request which saves the image via a bitmap% to get rid of
the external `convert` program.
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Hi Tomas,
you say you drain the set, do you remove elements one by one from it?
Do you need more from that set than only getting successive elements from
it?
It seems you are implementing something, which might require going lower
level or using different data structures.
I am still not really
Hi Thomas,
it seems to me that you may have a misleading intuition for racket's hash
tables.
Racket has mutable and immutable hash tables these are implemented
differently.
Because as a user of hash tables you have to differentiate between mutable
and immutable,
there are also different hash op
Another possibility is to set the stretchable-width of the message to #f,
this way the message does not take more than its minimal required space.
#lang racket/gui
(define (example)
(define frame (new frame% [label "Alignment example"] [width 400]))
(define vbox (new vertical-panel% [parent
I meant to write (less confusing):
"You say you want to use some definitions in your macro, why not just pass
the relevant ones as arguments to your macro?"
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Your second macro does not work as you expect, because by default macros in
racket are hygienic, described roughly that means that a macro only
"manipulates" the syntax it is given as arguments, not with the syntax
around its invocation. As gfb has mentioned one way to do this is to use
paramet
Am So., 1. Sept. 2019 um 22:55 Uhr schrieb Neil Van Dyke <
n...@neilvandyke.org>:
> Simon Schlee wrote on 9/1/19 3:28 PM:
> >
> > Try not to make identifiers be simple generic terms, like `watch`
> >
> >
> > I strongly disagree with this statement.
&
>
> Try not to make identifiers be simple generic terms, like `watch`
>
I strongly disagree with this statement.
Rackets require possibilities are highly flexible so if you want more
specific names use prefix-in and prefix the module name or whatever you
like.
The way racket does imports is one
I agree with your explanation and your version.
I think nobody expects stream-rest to change the concrete type of stream,
unless there is a good reason for it.
My guess is that nobody noticed because it happens to work.
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I have not completely read this thread in detail, but to me it seems like
it could be useful to you, to experiment with pollen and custom tags and
try to capture more semantic meaning with those tags.
I think you would have an easier time creating templates that layout the
code exactly like you
Classes are really nice and easy for tasks like this, it took me a little
bit to get used to the class syntax, but now I love them.
I found that it helps to look at real code that uses classes, because the
documentation quickly goes into quite advanced/special use cases.
You can use them to wrap-
After some more reading I think I understand the purpose for
watch-directories as a simple way to define callbacks for changes.
Maybe it could return a shutdown procedure but I guess using a custom
custodian and shutting that down might be easier.
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I Just had a quick look at the documentation, it states:
watch-directories
> Starts threads using thread-maker to watch each given directory. Meant
> for use with file-watcher procedures, namely apathetic-watch,
> intensive-watch, or robust-watch. This will block the current thread
> until all
> > (require db)
> > (define db (postgresql-connect ...args...))
> > (simple-result-info (query db "insert into collaborations (name) values
> ('foojalskdsfls')"))
> '((insert-id . #f) (affected-rows . 1))
>
With postgresql instead of doing a plain insert you can use returning to
return your
>
> Does anyone know good way to search for Racket #lang languages in packages
> and github? (GitHub advanced search is dire)
>
Maybe this helps you: https://searchcode.com/?q=%23lang&lan=143
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Hello,
while writing this email I found a solution to my problem.
By setting the PLT_GTK2 environment variable to:
export PLT_GTK2=/usr/lib64/libgtk-x11-2.0.so
like described in https://docs.racket-lang.org/gui/libs.html
The program runs with gtk2 and no longer crashes (with gtk3 it does for me)
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