Use of GUID constants

[Mike Parker via Digitalmars-d-learn]

On Thursday, 10 March 2016 at 10:16:30 UTC, KlausO wrote:
> Ok, but what's the intention behind defining GUIDs as enums in 
> the first place ?

Probably just an implementation error, i.e. someone not fully 
appreciating how GUIDs are intended to be used.

> Is there a recommended way to declare/define constants (e.g. as 
> enums or consts) ?

Generally, you should use a manifest constant, e.g.

enum myConst = 10;

Unless you need to take the address, then you should use 
immutable:

immutable myConst = 10;

The value of a manifest constant is substituted for the symbol at 
the point of use and is not stored in the data segment (so has no 
memory address), but an immutable (or const) variable is stored 
in the data segment.