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1 point by antiismist 4062 days ago | link | parent | on: New Version of Arc

That's great, I'll check it out. On it still references mzscheme version 352.


3 points by zck 4062 days ago | link

It still says to get arc2.tar; they haven't updated the page yet. Maybe it's because pg says, on Hacker news ( that it's a "preliminary release".


1 point by pg 4062 days ago | link

I wanted to give people using Arc a little time to try this out. If there are no disastrous bugs I'll switch over in a day or so.


2 points by antiismist 4206 days ago | link | parent | on: Wiki list of websites & apps using Arc from news.yc's famous nickb


that's sort of an aborted project for now.


2 points by antiismist 4282 days ago | link | parent | on: Reading a webpage

... I haven't seen before - interesting site!


1 point by antiismist 4282 days ago | link | parent | on: Reading a webpage

I used it a while back, and it seems to work.


2 points by antiismist 4340 days ago | link | parent | on: Things to know before learning Arc?

You don't need to know either (or any other language for that matter) to bang out a project of some kind via Arc.

But to hang with the language theory discussions here you are going to want to know everything you can about functional programming, and especially PLT's implementation of scheme, because that is what Arc runs on.


1 point by prakash 4339 days ago | link

I think in the long run the 2nd thing you state may be more important. How different is PLT scheme from DrScheme or are they one and the same?


1 point by absz 4339 days ago | link

They're the same thing, and it's moderately (though not hugely) different from R5RS/R6RS (the Scheme standard).


1 point by antiismist 4359 days ago | link | parent | on: Flag feature

It's been around for a while in news.yc, and I read somewhere here that pg upgraded this forum to match.


6 points by antiismist 4370 days ago | link | parent | on: Sounds like pg is still working on Arc

That's a good link. But it sounds like he is working on news.arc, not necessarily arc itself.


3 points by antiismist 4371 days ago | link | parent | on: History of T

"In short, the fundamental item the classical data-flow analysis algorithms need to operate is not available in a Scheme program."

Anyone know what the problem was/is?


5 points by stefano 4371 days ago | link

Suppose you write from the repl:

  (def car (x) (my-bizzare-computation))
Now you would expect every function that references car to use your new version. If you can't trust basic functions such as car, data-flow analysis becomes very hard. I'm not an expert and I have only a vague idea of what data-flow analysis is, but I think this could be the problem. This is only what I think, so I could be completely wrong.


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