simendsjo <simendsjo gmail.com> writes:

This is probably very simple, but I cannot find out how to do it..

I have several variables, and want to construct a tuple for the values.
int a;
string b;
ToTuple!(a, b) should create Tuple!(int, "a", string, "b")

template ToTuple(Variables...) {
   ?
}

=?UTF-8?B?QWxleCBSw7hubmUgUGV0ZXJzZW4=?= <alex lycus.org> writes:

On 31-05-2012 16:53, simendsjo wrote:
 This is probably very simple, but I cannot find out how to do it..

 I have several variables, and want to construct a tuple for the values.
 int a;
 string b;
 ToTuple!(a, b) should create Tuple!(int, "a", string, "b")

 template ToTuple(Variables...) {
 ?
 }

Just look at std.typecons.Tuple.

-- 
Alex Rønne Petersen
alex lycus.org
http://lycus.org

simendsjo <simendsjo gmail.com> writes:

On Thu, 31 May 2012 16:54:53 +0200, Alex R=C3=B8nne Petersen <alex lycus=
.org>  =

wrote:

 On 31-05-2012 16:53, simendsjo wrote:
 This is probably very simple, but I cannot find out how to do it..

 I have several variables, and want to construct a tuple for the value=


s.
 int a;
 string b;
 ToTuple!(a, b) should create Tuple!(int, "a", string, "b")

 template ToTuple(Variables...) {
 ?
 }

 Just look at std.typecons.Tuple.


I did, but I don't know how to lower it so I don't get tuples of tuples:=
  =

Tuple!(int,"a"c,Tuple!(string,"b"c))

"bearophile" <bearophileHUGS lycos.com> writes:

simendsjo:

 int a;
 string b;
 ToTuple!(a, b) should create Tuple!(int, "a", string, "b")

 template ToTuple(Variables...) {
   ?
 }

ToTuple will have a hard time inventing the names for those
fields...

Bye,
bearophile

simendsjo <simendsjo gmail.com> writes:

On Thu, 31 May 2012 18:42:20 +0200, bearophile <bearophileHUGS lycos.com>  
wrote:

 simendsjo:

 int a;
 string b;
 ToTuple!(a, b) should create Tuple!(int, "a", string, "b")

 template ToTuple(Variables...) {
   ?
 }

 ToTuple will have a hard time inventing the names for those
 fields...

 Bye,
 bearophile


Not sure I understand what you mean. Using Variables[i].stringof in a  
template gives the original name.

Philippe Sigaud <philippe.sigaud gmail.com> writes:

On Thu, May 31, 2012 at 7:14 PM, simendsjo <simendsjo gmail.com> wrote:
 On Thu, 31 May 2012 18:42:20 +0200, bearophile <bearophileHUGS lycos.com>
 wrote:

 simendsjo:

 int a;
 string b;
 ToTuple!(a, b) should create Tuple!(int, "a", string, "b")

 template ToTuple(Variables...) {
 =C2=A0?
 }



Is the following what you're looking for?


import std.stdio;
import std.typecons;
import std.typetuple;

template TypeAndName(Variables...)
{
    static if (Variables.length =3D=3D 0)
        alias TypeTuple!() TypeAndName;
    else
        alias TypeTuple!(typeof(Variables[0]), Variables[0].stringof,
TypeAndName!(Variables[1..$])) TypeAndName;
}

Tuple!(TypeAndName!(Variables)) toTuple(Variables...)()  property
{
    return Tuple!(TypeAndName!(Variables))(Variables);
}

void main()
{
    int i =3D 1;
    double d =3D 3.14;
    auto t =3D toTuple!(i,d);
    writeln(t.i);
    writeln(t.d);
}