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@ -21,12 +21,12 @@ |
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(define (id value) value) |
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(define (is-not value) (lambda (x) (not (equal? x value)))) |
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(define is-not-empty (lambda (x) (not (null? x)))) |
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(define (is-not-empty value) (not (null? value))) |
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(define (prepend first-value) (lambda (rest) (cons first-value rest))) |
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(define Y (lambda (f) (f (lambda (x) ((Y f) x))))) |
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(define Y2 (lambda (f) (f (lambda (x y) ((Y2 f) x y))))) |
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(define (Y f) (f (lambda (x) ((Y f) x)))) |
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(define (Y2 f) (f (lambda (x y) ((Y2 f) x y)))) |
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(define (reduce-right reducer initial) (Y |
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(lambda (f) (lambda (values) |
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@ -42,7 +42,7 @@ |
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right) |
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left)) |
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;=============== starts-with ====================== |
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;=============== flat ====================== |
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(define flat (reduce-right concat '())) |
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(assert-eq "flat test 1 failed" |
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