On 2008 Nov 12, at 5:38, Alberto G. Corona wrote:
Is there any abstract container that permits the addition of new
types of data? I know how to simulate the extension of Algebraic
datatypes, but this does not permit the addition of data with new
types in the same container and recover
http://www.cs.nott.ac.uk/~wss/Publications/DataTypesALaCarte.pdf
This lets you create sets of types to store in a container, with the
static guarantee that only members of the set of types are included.
The types can contain other elements of the set within them
recursively.
To extract value
Is there any abstract container that permits the addition of new types of
data? I know how to simulate the extension of Algebraic datatypes, but this
does not permit the addition of data with new types in the same container
and recover them in a type-safe way.
Did I reinvent the Weel? I found
