39 lines
1.6 KiB
Plaintext
39 lines
1.6 KiB
Plaintext
---
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Test
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---
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| script | lisp interpreter fixture |
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| show | evaluate | (defun adderx (x) (lambda (y) (+ x y))) |
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| show | evaluate | (setf adder20 (adderx 20)) |
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| check | evaluate | (funcall adder20 2) | 22 |
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| script | lisp interpreter fixture |
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| # | Let Over Lambda Over Let Over Lambda |
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| show | evaluate |!-
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(let ((direction 'up))
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(defun toggle-counter-direction ()
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(setq direction
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(if (eq direction 'up)
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'down
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'up)))
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(defun counter-class ()
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(let ((counter 0))
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(lambda ()
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(if (eq direction 'up)
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(setq counter (+ counter 1))
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(setq counter (- counter 1)))))))
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-!|
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| show | evaluate | (setq my-counter (counter-class)) |
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| check | evaluate | (funcall my-counter) | 1 |
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| check | evaluate | (funcall my-counter) | 2 |
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| check | evaluate | (funcall my-counter) | 3 |
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| show | evaluate | (toggle-counter-direction) |
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| check | evaluate | (funcall my-counter) | 2 |
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| check | evaluate | (funcall my-counter) | 1 |
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| check | evaluate | (funcall my-counter) | 0 |
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| show | evaluate | (toggle-counter-direction) |
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| check | evaluate | (funcall my-counter) | 1 |
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| check | evaluate | (funcall my-counter) | 2 |
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| check | evaluate | (funcall my-counter) | 3 | |