Use of Slices as Ranges

The std.array module to use slices as ranges

Merely importing the std.array module makes the most common container type conform to the most capable range type; slices can seamlessly be used as RandomAccessRange objects.

The std.array module provides the functions empty, front, popFront() and other range functions for slices. As a result, slices are ready to be used with any range function, for example with print():

import std.array; 

// ...
    print([ 1, 2, 3, 4 ]);

It is not necessary to import std.array if the std.range module has already been imported.

Since it is not possible to remove elements from fixed-length arrays, popFront(), cannot be defined for them. For that reason, fixed-length arrays cannot be used as ranges themselves: