C++: How to set an element of enum to infinite?

Question

i would like to generate an enum with one element set to inifite. I know about the limits library, but it seems this can only be used for specific datatypes. Yet i would like to use it in enum:

enum Speedlimits{ schoolarea = 30; normalarea = 50; highway = inifite; };

Any suggestions?

Why do you want to set it to infinite?

Robert Andrzejuk
– Robert Andrzejuk

2018-05-27 14:12:38 +00:00
Commented May 27, 2018 at 14:12 — Robert Andrzejuk
– Robert Andrzejuk, Commented May 27, 2018 at 14:12
299792458 m/s ... not only a good idea, it's the law.

Eljay
– Eljay

2018-05-27 14:59:27 +00:00
Commented May 27, 2018 at 14:59 — Eljay
– Eljay, Commented May 27, 2018 at 14:59

Jesper Juhl · Accepted Answer · 2018-05-27 14:18:07Z

C++ has no notion of infinite (well, at least not in enum context - in math context there's std::numeric_limits::infinity). You'll have to settle for setting the value of highway to some magic number (like -42 or whatever won't be normally used) and then treat that number as meaning "infinite" in your client code.. Or maybe find a way to represent things where you don't need infinite.

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