new tasks

Task/Classes/Tcl/classes.tcl

@@ -0,0 +1,22 @@
+package require TclOO
+oo::class create summation {
+    variable v
+    constructor {} {
+        set v 0
+    }
+    method add x {
+        incr v $x
+    }
+    method value {} {
+        return $v
+    }
+    destructor {
+        puts "Ended with value $v"
+    }
+}
+set sum [summation new]
+puts "Start with [$sum value]"
+for {set i 1} {$i <= 10} {incr i} {
+    puts "Add $i to get [$sum add $i]"
+}
+$sum destroy