Initial data commit

Task/Classes/UNIX-Shell/classes.sh

@@ -0,0 +1,19 @@
+typeset -T Summation_t=(
+    integer sum
+
+    # the constructor
+    function create {
+        _.sum=0
+    }
+
+    # a method
+    function add {
+        (( _.sum += $1 ))
+    }
+)
+
+Summation_t s
+for i in 1 2 3 4 5; do
+    s.add $i
+done
+print ${s.sum}