• =?UTF-8?B?Ik5vcmRsw7Z3Ig==?= (8/8) Dec 14 2014 Why arent' Tuples defaultly printed as
• Tobias Pankrath (30/38) Dec 14 2014 Tuple.expand?
• bearophile (7/15) Dec 14 2014 I'd like a shorter representation of tuples expecially when you

=?UTF-8?B?Ik5vcmRsw7Z3Ig==?= <per.nordlow gmail.com> writes:

Why arent' Tuples defaultly printed as

(1, 2)

instead

Tuple!(int, int)(1, 2)

?

What's the most convenient of tweak this behaviour so I get 
untyped-printing. Is there a function to convert a Tuple to into 
a D parameter tuple?

"Tobias Pankrath" <tobias pankrath.net> writes:

On Sunday, 14 December 2014 at 11:53:21 UTC, Nordlöw wrote:
 Why arent' Tuples defaultly printed as

 (1, 2)

 instead

 Tuple!(int, int)(1, 2)

 ?

 What's the most convenient of tweak this behaviour so I get 
 untyped-printing. Is there a function to convert a Tuple to 
 into a D parameter tuple?

Tuple.expand?

template Wrapper(Tuple)
{
   static if(isTuple!Tuple)
   {
     struct Wrapper(Tuple)
     {
	Tuple tup;
	alias tup this;
	// should use a better overload
	string toString()
	{
	  auto app = appender!string();
	  app.put("(");
	  app.put(to!string(wrapper(tuple[0])));
	  foreach(t; tuple.expand[1 .. $])
	  {
	    app.put(", ");
	    app.put(to!string(wrapper(t))))
	  }
	  app.put(")");
	  return app.data;
	}
     }
   }
   else
     alias Wrapper = Tuple;
}

auto wrapper(T)(T t) { return Wrapper!T(t); }

"bearophile" <bearophileHUGS lycos.com> writes:

Nordlöw:

 Why arent' Tuples defaultly printed as

 (1, 2)

 instead

 Tuple!(int, int)(1, 2)

 ?

 What's the most convenient of tweak this behaviour so I get 
 untyped-printing. Is there a function to convert a Tuple to 
 into a D parameter tuple?

I'd like a shorter representation of tuples expecially when you 
have an array of them. A single tuple is acceptable to print it 
in the longer current form.

You can open an enhancement request.

Bye,
bearophile