Data update

Task/Stack/EasyLang/stack.easy

@@ -0,0 +1,21 @@
+stack[] = [ ]
+proc push v . .
+   stack[] &= v
+.
+func pop .
+   if len stack[] = 0
+      return 0
+   .
+   r = stack[-1]
+   len stack[] -1
+   return r
+.
+func empty .
+   return if len stack[] = 0
+.
+push 2
+push 11
+push 34
+while empty = 0
+   print pop
+.