[<<][staapl][>>][..]
Tue Sep 18 13:44:48 CEST 2007

algebraic data types

look no further.. the plt-match.ss actually has this kind of stuff, at
least the pattern matching associated to algebraic types. and i think
it is extensible.

http://download.plt-scheme.org/doc/371/html/mzlib/mzlib-Z-H-34.html
http://en.wikipedia.org/wiki/Algebraic_data_type

"In computer programming, an algebraic data type is a datatype each of
whose values is data from other datatypes wrapped in one of the
constructors of the datatype. Any wrapped data is an argument to the
constructor. In contrast to other datatypes, the constructor is not
executed and the only way to operate on the data is to unwrap the
constructor using pattern matching."



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