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(define (f x) (if (< x 0) (lambda (y) (- y x)) (lambda (y) (- x y)))) GE f: P1 para:x body:(if … )

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Presentation on theme: "(define (f x) (if (< x 0) (lambda (y) (- y x)) (lambda (y) (- x y)))) GE f: P1 para:x body:(if … )"— Presentation transcript:

1 (define (f x) (if (< x 0) (lambda (y) (- y x)) (lambda (y) (- x y)))) GE f: P1 para:x body:(if … )

2 (define (foo bar x y) (let ((g (bar y))) (+ (g x) (g y)))) (define (f x) (if (< x 0) (lambda (y) (- y x)) (lambda (y) (- x y)))) GE f:foo: P1P2 para:x body:(if … ) para:bar,x,y body:(let … )

3 (define (foo bar x y) (let ((g (bar y))) (+ (g x) (g y)))) (define (f x) (if (< x 0) (lambda (y) (- y x)) (lambda (y) (- x y)))) (foo f 1 -2) GE f:foo: P1P2 para:x body:(if … ) para:bar,x,y body:(let … ) bar:P1 x:1 y:-2

4 (define (foo bar x y) (let ((g (bar y))) (+ (g x) (g y)))) (define (f x) (if (< x 0) (lambda (y) (- y x)) (lambda (y) (- x y)))) (foo f 1 -2) GE f:foo: P1P2 para:x body:(if … ) para:bar,x,y body:(let … ) bar:P1 x:1 y:-2 Evaluating: (bar y) => (P1 -2)

5 (define (foo bar x y) (let ((g (bar y))) (+ (g x) (g y)))) (define (f x) (if (< x 0) (lambda (y) (- y x)) (lambda (y) (- x y)))) (foo f 1 -2) GE f:foo: P1P2 para:x body:(if … ) para:bar,x,y body:(let … ) bar:P1 x:1 y:-2 x:-2 Evaluating: (bar y) => (P1 -2)

6 (define (foo bar x y) (let ((g (bar y))) (+ (g x) (g y)))) (define (f x) (if (< x 0) (lambda (y) (- y x)) (lambda (y) (- x y)))) (foo f 1 -2) GE f:foo: P1P2 para:x body:(if … ) para:bar,x,y body:(let … ) bar:P1 x:1 y:-2 x:-2 Evaluating: (if (< x 0) … )

7 (define (foo bar x y) (let ((g (bar y))) (+ (g x) (g y)))) (define (f x) (if (< x 0) (lambda (y) (- y x)) (lambda (y) (- x y)))) (foo f 1 -2) GE f:foo: P1P2 para:x body:(if … ) para:bar,x,y body:(let … ) bar:P1 x:1 y:-2 x:-2 P3 para:y body:(- y x)

8 (define (foo bar x y) (let ((g (bar y))) (+ (g x) (g y)))) (define (f x) (if (< x 0) (lambda (y) (- y x)) (lambda (y) (- x y)))) (foo f 1 -2) GE f:foo: P1P2 para:x body:(if … ) para:bar,x,y body:(let … ) bar:P1 x:1 y:-2 g: x:-2 P3 para:y body:(- y x)

9 (define (foo bar x y) (let ((g (bar y))) (+ (g x) (g y)))) (define (f x) (if (< x 0) (lambda (y) (- y x)) (lambda (y) (- x y)))) (foo f 1 -2) GE f:foo: P1P2 para:x body:(if … ) para:bar,x,y body:(let … ) bar:P1 x:1 y:-2 g: x:-2 P3 para:y body:(- y x) Evaluating: (g x) => (P3 1)

10 (define (foo bar x y) (let ((g (bar y))) (+ (g x) (g y)))) (define (f x) (if (< x 0) (lambda (y) (- y x)) (lambda (y) (- x y)))) (foo f 1 -2) GE f:foo: P1P2 para:x body:(if … ) para:bar,x,y body:(let … ) bar:P1 x:1 y:-2 g: x:-2 P3 para:y body:(- y x) y:1 Evaluating: (- y x) => 3

11 (define (foo bar x y) (let ((g (bar y))) (+ (g x) (g y)))) (define (f x) (if (< x 0) (lambda (y) (- y x)) (lambda (y) (- x y)))) (foo f 1 -2) GE f:foo: P1P2 para:x body:(if … ) para:bar,x,y body:(let … ) bar:P1 x:1 y:-2 g: x:-2 P3 para:y body:(- y x) y:1 Evaluating: (g y) => (P3 -2)

12 (define (foo bar x y) (let ((g (bar y))) (+ (g x) (g y)))) (define (f x) (if (< x 0) (lambda (y) (- y x)) (lambda (y) (- x y)))) (foo f 1 -2) GE f:foo: P1P2 para:x body:(if … ) para:bar,x,y body:(let … ) bar:P1 x:1 y:-2 g: x:-2 P3 para:y body:(- y x) y:1 y:-2 Evaluating: (- y x) => 0

13 (define (foo bar x y) (let ((g (bar y))) (+ (g x) (g y)))) (define (f x) (if (< x 0) (lambda (y) (- y x)) (lambda (y) (- x y)))) (foo f 1 -2) GE f:foo: P1P2 para:x body:(if … ) para:bar,x,y body:(let … ) bar:P1 x:1 y:-2 g: x:-2 P3 para:y body:(- y x) y:1 y:-2 Evaluating: (+ 3 0) => 3


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