- the essence of pickling is not hard: it is trivial
- pickling and unpickling can be implemented simply in any language
A pickle is...
- a program
- for a stack-oriented
- postfix language
In such a language, each operator pops its arguments from the stack
and pushes the result back onto the stack
The program computes a value, therefore, when it terminates, the stack
should contain a single element: the computed value