How to create a library, I mean an external file that holds functions just like std.stdio

[Carlos]

So I'm reading this tut from Ali :)

And we I got to this part :

A code example. http://pastebin.com/ESeL7dfH

But I want to declare this functions "print" outside of the file 
and call the file to be loaded by the compiler. So I can use the 
same solution in various program without having to copy paste it 
to each one.

Thanks you for your attention.

Checoimg

-------------------------------------
Main file :
-------------------------------------
import std.stdio;
import print;
void main()
{
     int[] numbers;

     int count;
     write("How many numbers are you going to enter? ");
     readf(" %s", &count);

     // Read the numbers
     foreach (i; 0 .. count) {
         int number;
         write("Number ", i, "? ");
         readf(" %s", &number);

         numbers ~= number;
     }

     // Print the numbers
     writeln("Before sorting:");
     print(numbers);

     numbers.sort;

     // Print the numbers
     writeln("After sorting:");
     print(numbers);
}
-----------------------------------------------
Library file :
-----------------------------------------------

void print(int[] slice)
{
     foreach (i, element; slice) {
         writefln("%3s:%5s", i, element);
     }
}
----------------------------------------------