Hello,

the prorgramm under linux dmd 2.007

import std.file;
import std.stdio;

int main() {
        string str1 = "Zeile 1\n", str2 = "Zeile 2 \n";
        const(void)[] buf;

        buf ~= str1; buf ~= str2;
        write("test_neu.txt",buf);

        return 0;
}

gives an error:

~/dd/dmd/src/phobos/std/format.d(1983): variable std.format.formatGeneric
(FileWriter!(char),const(           void)[]).formatGeneric.e voids have no
value

Have someone an idea to fix this.

manni

Manfred Hansen wrote:
> Hello,
> 
> the prorgramm under linux dmd 2.007  import std.file;
> import std.stdio;
> 
> int main() {
>         string str1 = "Zeile 1\n", str2 = "Zeile 2 \n";
>         const(void)[] buf;
> 
>         buf ~= str1; buf ~= str2;
>         write("test_neu.txt",buf);
> 
>         return 0;
> }
> 
> gives an error:
> 
> ~/dd/dmd/src/phobos/std/format.d(1983): variable std.format.formatGeneric
> (FileWriter!(char),const(           void)[]).formatGeneric.e voids have no
> value
> 
> Have someone an idea to fix this.
> 
> manni

You can't directly write out a void array, the standard library doesn't know how to do that since a void array basically means "I don't know what the type(s) of this data is/are".  You'll have to cast it to string before you can write it.

Thanks,
Nathan Reed

Nathan Reed wrote:

> Manfred Hansen wrote:
>> Hello,
>> 
>> the prorgramm under linux dmd 2.007
>> 
>> import std.file;
>> import std.stdio;
>> 
>> int main() {
>>         string str1 = "Zeile 1\n", str2 = "Zeile 2 \n";
>>         const(void)[] buf;
>> 
>>         buf ~= str1; buf ~= str2;
>>         write("test_neu.txt",buf);
>> 
>>         return 0;
>> }
>> 
>> gives an error:
>> 
>> ~/dd/dmd/src/phobos/std/format.d(1983): variable std.format.formatGeneric
>> (FileWriter!(char),const(           void)[]).formatGeneric.e voids have
>> no value
>> 
>> Have someone an idea to fix this.
>> 
>> manni
> 
> You can't directly write out a void array, the standard library doesn't know how to do that since a void array basically means "I don't know what the type(s) of this data is/are".  You'll have to cast it to string before you can write it.
> 
> Thanks,
> Nathan Reed

This example run with dmd 2.002 . I believe there has someting change in const/infariant situation.

The write method in std.file (line 147)  look like void write(in string name, const void[] buffer)

This is what i want.

Sincerely manni

Manfred Hansen escribió:
> Nathan Reed wrote:
> 
>> Manfred Hansen wrote:
>>> Hello,
>>>
>>> the prorgramm under linux dmd 2.007
>>>  import std.file;
>>> import std.stdio;
>>>
>>> int main() {
>>>         string str1 = "Zeile 1\n", str2 = "Zeile 2 \n";
>>>         const(void)[] buf;
>>>
>>>         buf ~= str1; buf ~= str2;
>>>         write("test_neu.txt",buf);
>>>
>>>         return 0;
>>> }
>>>
>>> gives an error:
>>>
>>> ~/dd/dmd/src/phobos/std/format.d(1983): variable std.format.formatGeneric
>>> (FileWriter!(char),const(           void)[]).formatGeneric.e voids have
>>> no value
>>>
>>> Have someone an idea to fix this.
>>>
>>> manni
>> You can't directly write out a void array, the standard library doesn't
>> know how to do that since a void array basically means "I don't know
>> what the type(s) of this data is/are".  You'll have to cast it to string
>> before you can write it.
>>
>> Thanks,
>> Nathan Reed
> 
> This example run with dmd 2.002 . I believe there has someting change
> in const/infariant situation. 
> 
> The write method in std.file (line 147)  look like void write(in string name, const void[] buffer)
> 
> This is what i want.
> 
> Sincerely manni
> 
> 
> 

In that case, use "std.file.write", or "alias std.file.write write" in your module.

-- 
Carlos Santander Bernal