Data commit

Task/Stack/D/stack.d

@@ -0,0 +1,26 @@
+import std.array;
+
+class Stack(T) {
+    private T[] items;
+
+    @property bool empty() { return items.empty(); }
+
+    void push(T top) { items ~= top; }
+
+    T pop() {
+        if (this.empty)
+            throw new Exception("Empty Stack.");
+        auto top = items.back;
+        items.popBack();
+        return top;
+    }
+}
+
+void main() {
+    auto s = new Stack!int();
+    s.push(10);
+    s.push(20);
+    assert(s.pop() == 20);
+    assert(s.pop() == 10);
+    assert(s.empty());
+}