SICP Exercise 3.11
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1,The result of (define acc (make-account 50)):
2, Environments when evaluating ((acc 'deposit) 40):
3, Result of ((acc 'deposit) 40):
4, Environments when evaluating ((acc 'withdraw) 60):
5,The result of ((define acc2 (make-account 100)):
The two account kept local states distinct by using different environment. Note: I assumed that the code is shared.
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