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Task/Vector-products/Sidef/vector-products.sidef

@@ -0,0 +1,25 @@
+class Vector(x, y, z) {
+    method ∙(vec) {
+        [self{:x,:y,:z}] »*« [vec{:x,:y,:z}] «+»;
+    }
+
+    method ⨉(vec) {
+        Vector(self.y*vec.z - self.z*vec.y,
+               self.z*vec.x - self.x*vec.z,
+               self.x*vec.y - self.y*vec.x);
+    }
+
+    method to_s {
+        "(#{x}, #{y}, #{z})";
+    }
+}
+
+var a = Vector(3, 4, 5);
+var b = Vector(4, 3, 5);
+var c = Vector(-5, -12, -13);
+
+say "a=#{a}; b=#{b}; c=#{c};";
+say "a ∙ b = #{a ∙ b}";
+say "a ⨉ b = #{a ⨉ b}";
+say "a ∙ (b ⨉ c) = #{a ∙ (b ⨉ c)}";
+say "a ⨉ (b ⨉ c) = #{a ⨉ (b ⨉ c)}";