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<Jeanne-Kamikaze>
Is there anything similar to C++ RAII objects or Haskell's ResourceT for automagically managing resources in Racket? The situations that come to mind are releasing a resource associated with an object when it is GC'ed, or maybe I am half way through some function and I encounter an error and need to clean up stuff I had acquired on the way there.
<Jeanne-Kamikaze>
I typically use the "with" pattern for short-lived kind of stuff, but I'm curious if there's something better for things that may live in memory longer.
<Jeanne-Kamikaze>
I'm specifically messing around with an OpenGL application, where you create buffers and GL objects and stuff that you need to free when you are done.
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<efm>
it appears cocalc.com is now offering drracket as an x11 app through the browser.
<efm>
It's the project by the Sage team to make teaching numerical programming easier
<bremner>
interesting. Sounds like it would need hella bandwidth
<bremner>
maybe they do something fancy with compression
<efm>
it's quite usable
<efm>
I've been using for running rstudio for over a year
<rudybot>
greghendershott: I asked `MemoServ' to forward the message to Jeanne-Kamikaze.
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<josiah_sama>
How is Pycket for system scripting?
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<samth>
josiah_sama: you shouldn't use pycket for anything real unless you already have a working racket program that you think will be sped up by pycket and you've benchmarked it
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<rain1>
I'm curious about call/ec does it have a delimited equivalent?
<rain1>
and I couldn't find much about how to implement it, there is a paper by Dybvig on implementing it alongside multi-shot continuations but what if you only have call/ec is there a simple way to do it?
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<josiah_sama>
samth understood. Thanks!
<samth>
rain1: yes, call/ec is delimited just like other continuations
<samth>
rain1: also, you can basically implement it with exceptions if you don't need full call/cc
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<rain1>
ah! it is already delimited, so tere's no need for a escape-shift type thing! I see
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<erkin>
Is the convention for matching symbols using match or case?
<erkin>
I've been using case, since there's nothing to evaluate for matching.
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<jcowan>
Is anyone else seeing CSS-free github.com? They are not reporting any op issues ATM.
<kd7ixo>
jcowan: it's loading fine for me now, even w/ forced-reload
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<J_Arcane>
jcowan: working fine for me but what browser/platform are you on?
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<jcowan>
yes, for people next to me too. Weird.
<rain1>
is call/ec and call/1c the same or different?
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<jcowan>
call/ec cannot be used to call back down the stack into exited code, only upwards, like an exception in most languages.
<jcowan>
You can always change it to call/cc for portability, with some loss of efficiency.
<rain1>
ok but to be clear i'm asking about 1c not cc
<rain1>
or should I say call/1cc
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<jcowan>
Oh. 1c means you can only call the continuation once and then it dies.
<jcowan>
This is orthogonal to ec (I think there is a 1ec) but again is cheaper than full call/cc.
<rain1>
oh interesting
<rain1>
it's hard to pin downm what any of these things really are or formally described as
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<jcowan>
The racket/control lib is clearly not engineered: it is just "the delimited control operators introduced in paper X by Y" for every value of X and Y there is.
<jcowan>
so that you can run Y's examples, basically
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<rain1>
haha
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