Initial data commit

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

@@ -0,0 +1,25 @@
+class MyVector(x, y, z) {
+    method ∙(vec) {
+        [self{:x,:y,:z}] »*« [vec{:x,:y,:z}] «+»
+    }
+ 
+    method ⨉(vec) {
+        MyVector(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 = MyVector(3, 4, 5)
+var b = MyVector(4, 3, 5)
+var c = MyVector(-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)}"