[racket-users] Generating alt text with image examples in Scribble?

Dear Racket users, I'm working on some Scribble documents that use both the @examples command and the 2htdp/image library. Here's a short example. --- START OF EXAMPLE --- #lang scribble/base @(require scribble/example teachpack/2htdp/scribblings/img-eval) @examples[#:eval

[racket-users] "Dynamic-wind record doesn't match prompt!" error

Somehow I'm triggering this error in Goblins. ; Dynamic-wind record doesn't match prompt! I am doing some things with delimited continuations. I'm guessing that's related, but I'm not sure why/how one might expect to trigger this error. Any ideas? Thoughts? - Chris -- You received this

[racket-users] distributed computation support for handin-server?

I’m currently supporting about 100 users in a PL class using the handin server and writing their programs in Typed Racket. This load is really wrecking my VPS. I upgraded to a larger VPS, and I’m still getting many users timing out. The problem is that although this is an 8-core machine, racket

Re: [racket-users] "Dynamic-wind record doesn't match prompt!" error

Christopher Lemmer Webber writes: > Somehow I'm triggering this error in Goblins. > > ; Dynamic-wind record doesn't match prompt! > > I am doing some things with delimited continuations. I'm guessing > that's related, but I'm not sure why/how one might expect to trigger > this error. Any

Re: [racket-users] "Dynamic-wind record doesn't match prompt!" error

Do you manipulate delimited continuations with explicit prompts somewhere? > On Oct 23, 2018, at 7:38 PM, Christopher Lemmer Webber > wrote: > > Christopher Lemmer Webber writes: > >> Christopher Lemmer Webber writes: >> >>> Somehow I'm triggering this error in Goblins. >>> >>> ;

Re: [racket-users] "Dynamic-wind record doesn't match prompt!" error

Christopher Lemmer Webber writes: > Christopher Lemmer Webber writes: > >> Somehow I'm triggering this error in Goblins. >> >> ; Dynamic-wind record doesn't match prompt! >> >> I am doing some things with delimited continuations. I'm guessing >> that's related, but I'm not sure why/how one

Re: [racket-users] distributed computation support for handin-server?

Have you considered some sort of yield-management incentive, such as offering a higher grade to students who submit during less-busy periods? :P Although I don't know anything about the handin server, or very much about load-balancing, just riffing: A simple round-robin HTTP proxy probably

Re: [racket-users] "Dynamic-wind record doesn't match prompt!" error

At Tue, 23 Oct 2018 17:24:38 -0400, Christopher Lemmer Webber wrote: > Somehow I'm triggering this error in Goblins. > > ; Dynamic-wind record doesn't match prompt! > > I am doing some things with delimited continuations. I'm guessing > that's related, but I'm not sure why/how one might