Use Safety as per-object mixin
We can use Safety as a per-object mixin
% Stack s2 -mixin Safety ::s2 % s2 push a a % s2 pop a % s2 pop Stack empty!
The mixin can be added/removed to existing objects at any time
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We can use Safety as a per-object mixin
% Stack s2 -mixin Safety ::s2 % s2 push a a % s2 pop a % s2 pop Stack empty!
The mixin can be added/removed to existing objects at any time
