Arc Forum | History of T

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	History of T (paulgraham.com)
	7 points by jmatt 5964 days ago \| 4 comments

3 points by almkglor 5963 days ago | link

Interesting. So apparently dataflow analysis is hard. Hmm.

Ah well; never mind that, first I gotta implement blocking I/O in a green-threaded environment.

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3 points by antiismist 5963 days ago | link

"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?

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5 points by stefano 5962 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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1 point by jmatt 5963 days ago | link

Has arc created any disses yet? )

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