xo-unit: docs: + example programs

example/ex1/ex1.cpp

@@ -0,0 +1,18 @@
+/** @file ex1.cpp **/
+
+#include "xo/unit/quantity.hpp"
+#include <iostream>
+
+int
+main () {
+    namespace qty = xo::obs::qty;
+    using namespace std;
+
+    auto t = qty::milliseconds(10);
+    auto m = qty::kilograms(2.5);
+    auto a = m / (t*t);
+
+    cerr << "t: " << t << ", m: " << m << ", m.t^-2: " << a << endl;
+}
+
+/** end ex1.cpp **/