On 21.04.2006, at 22:20, Chris Rathman wrote:
what's the best way to seamlessly go from an enumeration type (colors)
into integers?
I would simply add some data abstraction layer which defines, e.g.,
EncColor and DecColor.
fun {MakeTable R}
{Adjoin
{List.toRecord unit {Map {Record.toListInd R} fun {$ F#X} X#F end}}
R}
end
Colors = {MakeTable colors(beige coral mauve ochre)}
fun {EncColor X}
Colors.X
end
fun {DecColor I}
Colors.I
end
NB: This MakeTable implementation presupposes that your symbols are
never integers, otherwise you might, e.g., encode by searching for the
integer associated with some symbol.
Best,
Torsten
--
Torsten Anders
Sonic Arts Research Centre
Queen's University Belfast (UK)
www.torsten-anders.de
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