2 problems I can't get my head around

[Timon Gehr]

On 11/28/2012 02:07 PM, tn wrote:
> On Tuesday, 27 November 2012 at 21:16:41 UTC, Walter Bright wrote:
>> On 11/27/2012 9:51 PM, Manu wrote:
>>> There's another you missed:
>>> enum X = 10;
>>> I would have imagined this would be semantically identical to E.A/E.B,
>>> but the compiler seemed to view this as distinct in my experiments.
>>
>> Those are not enums, they are manifest constants. What distinguishes a
>> manifest constant from, say:
>>
>>     const Y = 11;
>>
>> is that no storage is allocated for X, and X's address cannot be taken.
>
> What distinguishes manifest constants from literals? Aren't manifest
> constants just literal aliases? That is, if the following did work
>
> alias Y = 11;
>
> wouldn't that be exactly same as
>
> enum Y = 11;
>
> Perhaps using "alias" instead of "enum" would make the meaning clearer?
>

It would not be the same thing.

immutable int i = 11;

alias Y = i; // symbol alias
enum  Z = i; // literal constant