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digitalmars.D.learn - pass variable names

reply "Saaa" <empty needmail.com> writes:
Is it possible to get the passed variable name à la:
--
void functio(A...)(ref A a)
{
    writefln(typeof(a[0]));
}
int i;
functio(i); // prints "i"
--
Also how do I fix this:
--
functio(`i`); // Error: "i" is not an lvalue
--
Jul 09 2009
parent reply Daniel Keep <daniel.keep.lists gmail.com> writes:
Saaa wrote:

 Is it possible to get the passed variable name � la:
 --
 void functio(A...)(ref A a)
 {
     writefln(typeof(a[0]));
 }
 int i;
 functio(i); // prints "i"



No.

You should be able to get the name using an alias:

void func(alias var)()
{
    writefln(var.stringof);
}

But you can't do it at runtime.


 Also how do I fix this:
 --
 functio(`i`); // Error: "i" is not an lvalue



You have to store the literal in a variable.
Jul 09 2009
parent reply "Saaa" <empty needmail.com> writes:
 No.

 You should be able to get the name using an alias:

 void func(alias var)()
 {
    writefln(var.stringof);
 }





 But you can't do it at runtime.


 Also how do I fix this:
 --
 functio(`i`); // Error: "i" is not an lvalue



 You have to store the literal in a variable.



func( `name_i`, i, `name_ar`, ar, `name_b`, b ..etc..)
only the variables need to be ref.
Jul 09 2009
parent BCS <none anon.com> writes:
Hello Saaa,


 No.
 
 You should be able to get the name using an alias:
 
 void func(alias var)()
 {
 writefln(var.stringof);
 }



 



I'll seconds this, there doesn't seem to be any way to generate tuples of 
aliases and this is another cases where it would be handy.
Jul 09 2009