On Tuesday, 17 April 2012 at 18:25:21 UTC, Ali Çehreli wrote:
> On 04/17/2012 11:13 AM, Xan wrote:
>
> > The idea is behind this https://gist.github.com/2407923
> > But I receive:
> >
> > $ gdmd-4.6 algorisme_code.d
> > algorisme_code.d:22: Error: variable codi cannot be read at
> compile time
> > algorisme_code.d:22: Error: argument to mixin must be a
> string, not (codi)
>
> mixin is about code generation. For that reason the string that is given to it must be available at compile time. Upon analyzing the code, that is the case in your example, but because mixin() appears inside the constructor, it cannot use a string parameter.
>
> That's why I had used a template parameter for the function string. There may be a number of solutions but only you can decide on what to do. One solution is to mixin the delegate outside of the constructor and pass as an argument along with its string representation:
>
>     // Untested code
>     this(... Funcio funcio, string funcioText) {
>         ...
>     }
>
> In main:
>
>     enum funcioText = "...";
>     auto funcio = mixin(funcioText);
>
>     ... new Algorisme(..., funcio, funcioText);
>
> Ali

What is change is this code? Is it the same as this https://gist.github.com/2407923 (I revise the code)?

With my (v. 2) code I receive the errors:

$ gdmd-4.6 algorisme_code.d
algorisme_code.d:44: Error: variable codi cannot be read at compile time
algorisme_code.d:44: Error: argument to mixin must be a string, not (codi)
algorisme_code.d:45: Error: constructor algorisme_code.Algorisme!(int,int).Algorisme.this (string nom, uint versio, int function(int) funcio, string codi) is not callable using argument types (string,int,_error_,string)


Why the string is not given at compile code? I don't understand it!

Xan.

On Tuesday, 17 April 2012 at 18:39:16 UTC, Xan wrote:
> On Tuesday, 17 April 2012 at 18:25:21 UTC, Ali Çehreli wrote:
>> On 04/17/2012 11:13 AM, Xan wrote:
>>
>> > The idea is behind this https://gist.github.com/2407923
>> > But I receive:
>> >
>> > $ gdmd-4.6 algorisme_code.d
>> > algorisme_code.d:22: Error: variable codi cannot be read at
>> compile time
>> > algorisme_code.d:22: Error: argument to mixin must be a
>> string, not (codi)
>>
>> mixin is about code generation. For that reason the string that is given to it must be available at compile time. Upon analyzing the code, that is the case in your example, but because mixin() appears inside the constructor, it cannot use a string parameter.
>>
>> That's why I had used a template parameter for the function string. There may be a number of solutions but only you can decide on what to do. One solution is to mixin the delegate outside of the constructor and pass as an argument along with its string representation:
>>
>>    // Untested code
>>    this(... Funcio funcio, string funcioText) {
>>        ...
>>    }
>>
>> In main:
>>
>>    enum funcioText = "...";
>>    auto funcio = mixin(funcioText);
>>
>>    ... new Algorisme(..., funcio, funcioText);
>>
>> Ali
>
> What is change is this code? Is it the same as this https://gist.github.com/2407923 (I revise the code)?
>
> With my (v. 2) code I receive the errors:
>
> $ gdmd-4.6 algorisme_code.d
> algorisme_code.d:44: Error: variable codi cannot be read at compile time
> algorisme_code.d:44: Error: argument to mixin must be a string, not (codi)
> algorisme_code.d:45: Error: constructor algorisme_code.Algorisme!(int,int).Algorisme.this (string nom, uint versio, int function(int) funcio, string codi) is not callable using argument types (string,int,_error_,string)
>
>
> Why the string is not given at compile code? I don't understand it!
>
> Xan.


It works with enum instead of string:
https://gist.github.com/2407923

Thanks all of you,
Xan.