[racket-users] How to Design Visual Notations

Hi, yesterday I've uploaded a video which presents the experimental visual programming environment that I've been working on for the past few months. (The main idea is to allow embedding experimental visual programming environments in it) Here's the link:

[racket-users] tree-layout, many many thanks

I wanted to format binary search trees for a data structures exam. I spent literally hours trawling through old source code to see how I’d done it before… graphviz? tikzpicture? … before giving up and doing what I should have done in the first place, looking in the racket docs. Tree-layout does

Re: [racket-users] How do I get the username from a database handle?

On Tue, Feb 26, 2019 at 4:58 PM David Storrs wrote: > Given a database handle, I'd like to be able to ask it what user it's > connected as. Is there a way to do this? > > I don't see anything in the `db` library's API to get this, but your database probably allows you to do it in SQL (at the

[racket-users] How do I get the username from a database handle?

Given a database handle, I'd like to be able to ask it what user it's connected as. Is there a way to do this? -- 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

Re: [racket-users] R6RS history

Let me inject some comments that make it a bit more obvious what’s happening here: > On Feb 26, 2019, at 3:33 PM, Sam Tobin-Hochstadt wrote: > RnRS meetings from 1984 thru 2003 adhere to the “unanimity rule” originating from the MIT group. In 2001, I created and ran “Scheme and

Re: [racket-users] R6RS history

I think a genuinely detailed accounting of this has to wait for a conversation over beer, but: 2003: New Scheme Standard proposed at the Scheme Workshop 2006: First draft of R6RS released 2007: R6RS Ratified by community vote after extensive discussion and revision 2009: A new Scheme Standard

[racket-users] R6RS history

What exactly is the history surrounding scheme, racket, and r6rs? I've gotten vague impressions of serious scheme community conflicts around that time but nothing specific. Does anyone have a timeline of important events related to that? -- You received this message because you are subscribed to

[racket-users] Re: Recording of conference talk: Make your own language with Racket FOSDEM19

It was my first talk so some things are off (I'm planning to correct them when the youtube video is up). I'm open to any comments, next talk will be better ;) I also had a lightning talk at FOSDEM the morning of the same day, which is kind of a "teaser" for this one. You can find it here: