[plt-scheme] Checking to see if a key is present in a hash table

From: Dave Herman (dherman at ccs.neu.edu)
Date: Sun Feb 26 01:01:50 EST 2006

> FWIW, with-handlers is implemented using escaping continuations (and
> thread cells and continuation marks and call-with-values and ...).


and pointers, and OS schedulers, and NAND gates, and semiconductors. But 
I still don't think he needs to think about them here.


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