import std.stdio;

void main()
{
    // Here we create an array `a` that will hold exactly
    // 5 `int`s. The type of elements and length are both
    // part of the array's type. By default an array is
    // zero-valued, which for `int`s means `0`s.
    int[5] a;
    writeln("emp:", a);

    // We can set a value at an index using the
    // array[index] = value syntax, and get a value with
    // array[index].
    a[4] = 100;
    writeln("set:", a);
    writeln("get:", a[4]);

    // The .length property returns the length of an array.
    writeln("len:", a.length);

    // Use this syntax to declare and initialize an array
    // in one line.
    int[5] b = [1, 2, 3, 4, 5];
    writeln("dcl:", b);

    // You can also have the compiler count the number of
    // elements for you with `auto`
    auto c = [1, 2, 3, 4, 5];
    writeln("dcl:", c);

    // If you specify the index with `:`, the elements in
    // between will be zeroed.
    int[5] d = [100, 0, 0, 400, 500];
    writeln("idx:", d);

    // Array types are one-dimensional, but you can
    // compose types to build multi-dimensional data
    // structures.
    int[2][3] twoD;
    foreach (i; 0..2)
    {
        foreach (j; 0..3)
        {
            twoD[i][j] = i + j;
        }
    }
    writeln("2d: ", twoD);

    // You can create and initialize multi-dimensional
    // arrays at once too.
    int[2][3] twoD2 = [
        [1, 2, 3],
        [1, 2, 3]
    ];
    writeln("2d: ", twoD2);
}