Dear,

I use FieldTypeTuple and FieldNameTuple to get type and correponding field name but I fail to loop over these tuple.

As example:

struct Person{
    private string name;
    private ushort age;
    private bool   isMale;

    this(string name, ushort age, bool   isMale){
        this.name    = name;
        this.age     = age;
        this.isMale  = isMale;
    }
}

I would like to print with pragma msg:
 string name
 ushort age
 bool   isMale

for this I tried:

template getDeclarationFields( FieldTypeName...){
    enum typeIndex  = 0;
    enum nameIndex  = FieldTypeName.length / 2;
    enum  res       = FieldTypeName[typeIndex] ~ ' ' ~ FieldTypeName[nameIndex] ~';';
    static if( FieldTypeName.length == 1)
        enum getDeclarationFields = res;
    else
        enum getDeclarationFields = res ~ getDeclarationFields!( FieldTypeName[typeIndex+1..nameIndex] ~ FieldTypeName[nameIndex+1..$] );
}

but that don't build

I though that orange lib should do this somewhere but the lib usi his self trait method

thanks for your help

On 10/27/2015 03:34 PM, bioinfornatics wrote:

> I use FieldTypeTuple and FieldNameTuple to get type and correponding
> field name but I fail to loop over these tuple.

You can use the .tupleof property and a compile-time foreach:

  http://dlang.org/class.html (Search for .tuplof on that page)

  http://ddili.org/ders/d.en/tuples.html#ix_tuples..tupleof

  http://ddili.org/ders/d.en/tuples.html#ix_tuples.compile-time%20foreach

Ali

On Tuesday, 27 October 2015 at 22:53:35 UTC, Ali Çehreli wrote:
> On 10/27/2015 03:34 PM, bioinfornatics wrote:
>
> > I use FieldTypeTuple and FieldNameTuple to get type and
> correponding
> > field name but I fail to loop over these tuple.
>
> You can use the .tupleof property and a compile-time foreach:
>
>   http://dlang.org/class.html (Search for .tuplof on that page)
>
>   http://ddili.org/ders/d.en/tuples.html#ix_tuples..tupleof
>
>   http://ddili.org/ders/d.en/tuples.html#ix_tuples.compile-time%20foreach
>
> Ali

 wow Nice without traits
thanks Ali for your amazing work

best regards