Hello guys,

I have an enumeration which contains symbols of different currencies like the following:

enum CURRENCY : wchar {

	DOLLAR = '$',
	EURO = '¤',
	YEN = ...

}

When I try to append it to a string like

char[] myString = "Currency: " ~ CURRENCY.DOLLAR

I get the following error: "Error: incompatible types for... 'char[]' and 'int'"

But... when I try the following:

char[] myString = "Currency: " ~ cast(char) CURRENCY.DOLLAR

It works, but not for all currencies.
What can I do to support all currencies?

Thanks for any help.

Nrgyzer <nrgyzer@gmail.com> wrote:

> But... when I try the following:
>
> char[] myString = "Currency: " ~ cast(char) CURRENCY.DOLLAR
>
> It works, but not for all currencies.
> What can I do to support all currencies?

The problem is that not all UTF-8 code points fit in one char.
I would recommend in this situation to use a string enum:


enum CURRENCY : string {

	DOLLAR = "$",
	EURO = "€",
	YEN = ...

}

-- 
Simen

When I use an string enumeration, I get the following error (dmd1):

CURRENCY base type must be of integral type, not char[]

Nrgzyer <nrgzyer@gmail.com> wrote:

> When I use an string enumeration, I get the following error (dmd1):
>
> CURRENCY base type must be of integral type, not char[]

Ah, you're using D1. Well, a solution would be to use dchar[] instead
of char[].

-- 
Simen

But for enums I can't use char[] as basetype and when I use cast(dchar)
or cast(wchar) I also get "Error: incompatible types for...".

I solved the problem by using toUTF8 from std.utf but I think it's a dirty solution because I have to cast wchar to wchar[] because a simple toUTF8(CURRENCY.DOLLAR) matches wchar[] and dchar[] signatures.

On Sun, 21 Nov 2010 05:58:30 -0500, Nrgyzer <nrgyzer@gmail.com> wrote:

> Hello guys,
>
> I have an enumeration which contains symbols of different currencies
> like the following:
>
> enum CURRENCY : wchar {
>
> 	DOLLAR = '$',
> 	EURO = '�',
> 	YEN = ...
>
> }
>
> When I try to append it to a string like
>
> char[] myString = "Currency: " ~ CURRENCY.DOLLAR
>
> I get the following error: "Error: incompatible types for... 'char[]'
> and 'int'"

I'm guessing from the code/error, this is D1.  D2 does support appending different width characters to dchar[], I'm not sure about appending wchar to a char[] though.

I don't think D1 has such support.

It also doesn't have support for enums as strings, so I think you may just have to create a function that returns a char[], given a wchar.

-Steve