Hi

Let's say we have an enum like

enum SomethingAboutChristmas {
  SantaClaus,
  Angel,
  Tree
}

and want to use it in a function like

  void goingChristmas(SomethingAboutChristmas enumvalue)

it works fine like following

  goingChristmas(SomethingAboutChristmas.Tree)

I prefer to use a shorter version

  goingChristmas(Tree)

because it's clear (for me), that "Tree" in "goingChristmas()" is an enum of "SomethingAboutChristmas"

Is any chance to do this? The DMD-compiler says no.

Thanke & Regards, Ozan

On 01/12/15 11:44 PM, Ozan wrote:
> Hi
>
> Let's say we have an enum like
>
> enum SomethingAboutChristmas {
>    SantaClaus,
>    Angel,
>    Tree
> }
>
> and want to use it in a function like
>
>    void goingChristmas(SomethingAboutChristmas enumvalue)
>
> it works fine like following
>
>    goingChristmas(SomethingAboutChristmas.Tree)
>
> I prefer to use a shorter version
>
>    goingChristmas(Tree)
>
> because it's clear (for me), that "Tree" in "goingChristmas()" is an
> enum of "SomethingAboutChristmas"
>
> Is any chance to do this? The DMD-compiler says no.
>
> Thanke & Regards, Ozan

If you insist..
You can also use alias and with statement to emulate this too.
Or generate it at compile time.

enum SomethingAboutChristmas {
    SantaClaus,
    Angel,
    Tree
}

enum {
    SantaClaus = SomethingAboutChristmas.SantaClaus,
    Angel = SomethingAboutChristmas.Angel,
    Tree = SomethingAboutChristmas.Tree,
}

void main() {
	SomethingAboutChristmas foo = Tree;	
}

V Tue, 01 Dec 2015 10:44:06 +0000
Ozan via Digitalmars-d-learn <digitalmars-d-learn@puremagic.com>
napsáno:

> Hi
> 
> Let's say we have an enum like
> 
> enum SomethingAboutChristmas {
>    SantaClaus,
>    Angel,
>    Tree
> }
> 
> and want to use it in a function like
> 
>    void goingChristmas(SomethingAboutChristmas enumvalue)
> 
> it works fine like following
> 
>    goingChristmas(SomethingAboutChristmas.Tree)
> 
> I prefer to use a shorter version
> 
>    goingChristmas(Tree)
> 
> because it's clear (for me), that "Tree" in "goingChristmas()" is an enum of "SomethingAboutChristmas"
> 
> Is any chance to do this? The DMD-compiler says no.
> 
> Thanke & Regards, Ozan
> 

with(SomethingAboutChristmas) {
    goingChristmas(Tree);
    goingChristmas(SantaClaus);
    ...
}

On Tuesday, 1 December 2015 at 10:50:04 UTC, Rikki Cattermole wrote:
> On 01/12/15 11:44 PM, Ozan wrote:
>> Hi
>>
>> Let's say we have an enum like
>>
>> enum SomethingAboutChristmas {
>>    SantaClaus,
>>    Angel,
>>    Tree
>> }
>>
>> and want to use it in a function like
>>
>>    void goingChristmas(SomethingAboutChristmas enumvalue)
>>
>> it works fine like following
>>
>>    goingChristmas(SomethingAboutChristmas.Tree)
>>
>> I prefer to use a shorter version
>>
>>    goingChristmas(Tree)
>>
>> because it's clear (for me), that "Tree" in "goingChristmas()" is an
>> enum of "SomethingAboutChristmas"
>>
>> Is any chance to do this? The DMD-compiler says no.
>>
>> Thanke & Regards, Ozan
>
> If you insist..
> You can also use alias and with statement to emulate this too.
> Or generate it at compile time.
>
> enum SomethingAboutChristmas {
>     SantaClaus,
>     Angel,
>     Tree
> }
>
> enum {
>     SantaClaus = SomethingAboutChristmas.SantaClaus,
>     Angel = SomethingAboutChristmas.Angel,
>     Tree = SomethingAboutChristmas.Tree,
> }
>
> void main() {
> 	SomethingAboutChristmas foo = Tree;	
> }

This is like: Q) I want to write an OS. How?  A) Write in assembly.

What Ozan says is logical. Compiler should assume it in that way normally. I have thoroughly thought about whether this assumption would cause problem yet though.

Unfortunately compiler doesn't accept that.

On Tuesday, 1 December 2015 at 13:03:37 UTC, tcak wrote:
> On Tuesday, 1 December 2015 at 10:50:04 UTC, Rikki Cattermole wrote:
>> [...]
>
> This is like: Q) I want to write an OS. How?  A) Write in assembly.
>
> What Ozan says is logical. Compiler should assume it in that way normally. I have thoroughly thought about whether this assumption would cause problem yet though.
>
> Unfortunately compiler doesn't accept that.

*haven't thought