[plt-scheme] Some questions about shared, match and types

From: Groshev Dmitry (a2alt at yandex.ru)
Date: Sun May 30 08:03:43 EDT 2010

Hello. Some newbie questions:
-what is the common usage of "shared"?
-what is the best practices to use "match"?
-typed scheme - is it just a toy/proof of concept or it will evolve and grow? does scheme classes usable as types?

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