enumeration types in Oberon

Soren Renner — 2001-03-29 16:04:10

>       Another option would be to introduce what in Pascal and in

>       some other languages are enumeration types:

>           TrafficLights = (red, green, yellow)

>       which in most respects would be equivalent to something

>       which in (current) Joy be

>           red == 0; green == 1; yellow == 3;

>       and similarly in old K&R C. I seem to remember that the

>       enumeration type was not included in Oberon (am I right,

>       Soren?), for some reason to do with type extensions or

>       something. Anyhow, enumeration types like "TrafficLights"



 
Oberon does not have enumeration types. I don't know if the reason had anything to do with type extensions. The first Oberon did't even have a FOR construct, although later versions did. The Oberon spirit dictates the omission of features whenever possible. 



sr