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A tail call allows a function to return the result of another function without leaving an entry on the stack. Tail recursion is a specific case of tail calling. -- ASPN : Python Cookbook : Explicit Tail Call
Premature optimization is the root of all evil (or at least most of it) in programming. -- Donald Knuth
I think there’s a world market for about 5 computers. -- Thomas J. Watson, Chairman of the Board, IBM, circa 1948
Beware of bugs in the above code; I have only proved it correct, not tried it. -- Donald Knuth
We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil. -- Donald Knuth
Many of life's failures are people who did not realize how close they were to success when they gave up. -- Thomas Edison
If you do what you always did, you will get what you always got. ~Anonymous
Do one thing every day that scares you. ~Anonymous
The only person you are destined to become is the person you decide to be. –Ralph Waldo Emerson
Real difficulties can be overcome; it is only the imaginary ones that are unconquerable. ~Theodore N. Vail