Data commit

Task/Collections/D/collections-1.d

@@ -0,0 +1,3 @@
+int[3] array;
+array[0] = 5;
+// array.length = 4; // compile-time error

Task/Collections/D/collections-2.d

@@ -0,0 +1,6 @@
+int[] array;
+array ~= 5; // append 5
+array.length = 3;
+array[3] = 17; // runtime error: out of bounds. check removed in release mode.
+array = [2, 17, 3];
+writefln(array.sort); // 2, 3, 17

Task/Collections/D/collections-3.d

@@ -0,0 +1,8 @@
+int[int] array;
+// array ~= 5; // it doesn't work that way!
+array[5] = 17;
+array[6] = 20;
+// prints "[5, 6]" -> "[17, 20]" - although the order is not specified.
+writefln(array.keys, " -> ", array.values);
+assert(5 in array); // returns a pointer, by the way
+if (auto ptr = 6 in array) writefln(*ptr); // 20