work transfer to laptop
This commit is contained in:
+71
-72
@@ -1,10 +1,8 @@
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(define-syntax (pe expr)
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`(printf ',expr "evaluates to" ,expr))
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`(print ',expr "evaluates to" ,expr))
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(define-syntax (when condition :rest body)
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"Special form for when multiple actions should be done if a
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(define-syntax (when condition . body)
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:doc "Special form for when multiple actions should be done if a
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condition is true.
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{{{example_start}}}
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@@ -22,22 +20,23 @@ condition is true.
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`(if ,condition @body nil)
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`(if ,condition (begin @body) nil)))
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(define-syntax (unless condition :rest body)
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"Special form for when multiple actions should be done if a
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(define-syntax (unless condition . body)
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:doc "Special form for when multiple actions should be done if a
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condition is false."
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(if (= (rest body) ())
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`(if ,condition nil @body)
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`(if ,condition nil (begin @body))))
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(define-syntax (n-times times action)
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"Executes action times times."
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:doc "Executes action times times."
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(define (repeat times elem)
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(unless (> 1 times)
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(pair elem (repeat (- times 1) elem))))
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`(begin @(repeat times action)))
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(define-syntax (let bindings :rest body)
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(define-syntax (let bindings . body)
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(define (unzip lists)
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(break)
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(when lists
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(define (iter lists l1 l2)
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(define elem (first lists))
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@@ -51,9 +50,9 @@ condition is false."
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(define unzipped (unzip bindings))
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`((lambda ,(first unzipped) @body) @(first (rest unzipped))))
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`((,lambda ,(first unzipped) @body) @(first (rest unzipped))))
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(define-syntax (cond :rest clauses)
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(define-syntax (cond . clauses)
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(define (rec clauses)
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(if (= nil clauses)
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nil
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@@ -68,7 +67,7 @@ condition is false."
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(rec clauses))
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(define-syntax (case var :rest clauses)
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(define-syntax (case var . clauses)
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(define (rec clauses)
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(if (= nil clauses)
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nil
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@@ -82,11 +81,11 @@ condition is false."
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,(rec (rest clauses))))))
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(rec clauses))
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(define-syntax (define-special name-and-args :rest body)
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(define-syntax (define-special name-and-args . body)
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`(define ,(first name-and-args) (special-lambda ,(rest name-and-args) @body)))
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(define-syntax (construct-list :rest body)
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"
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(define-syntax (construct-list . body)
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:doc "
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{{{example_start}}}
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(construct-list
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i <- '(1 2 3 4 5)
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@@ -127,11 +126,11 @@ condition is false."
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(rec body))
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(define-syntax (apply fun seq)
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"Applies the function to the sequence, as in calls the function with
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:doc "Applies the function to the sequence, as in calls the function with
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ithe sequence as arguemens."
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`(eval (pair ,fun ,seq)))
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(define-syntax (define-typed args :rest body)
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(define-syntax (define-typed args . body)
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(define (get-arg-names args)
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(when args
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(pair (first args)
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@@ -144,7 +143,7 @@ ithe sequence as arguemens."
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@body)))
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(define-syntax (define-module module-name :keys exports :rest body)
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(define-syntax (define-module module-name :exports . body)
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(let ((module-prefix (concat-strings (symbol->string module-name) "::")))
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(eval `(begin @body))
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(pair 'begin
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@@ -159,14 +158,14 @@ ithe sequence as arguemens."
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(define (null? x)
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"Checks if the argument is =nil=."
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:doc "Checks if the argument is =nil=."
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(= x ()))
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(define (type=? obj typ)
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"Checks if the argument =obj= is of type =typ="
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:doc "Checks if the argument =obj= is of type =typ="
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(= (type obj) typ))
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(define (types=? :rest objs)
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(define (types=? . objs)
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(define (inner objs)
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(if objs
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(let ((actual-type (type (first objs)))
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@@ -177,7 +176,7 @@ ithe sequence as arguemens."
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t))
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(inner objs))
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(define (assert-types= :rest objs)
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(define (assert-types= . objs)
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(define (inner objs)
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(when objs
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(let ((actual-type (type (first objs)))
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@@ -188,39 +187,39 @@ ithe sequence as arguemens."
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(inner objs))
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(define (number? x)
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"Checks if the argument is a number."
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:doc "Checks if the argument is a number."
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(type=? x :number))
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(define (symbol? x)
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"Checks if the argument is a symbol."
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:doc "Checks if the argument is a symbol."
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(type=? x :symbol))
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(define (keyword? x)
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"Checks if the argument is a keyword."
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:doc "Checks if the argument is a keyword."
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(type=? x :keyword))
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(define (pair? x)
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"Checks if the argument is a pair."
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:doc "Checks if the argument is a pair."
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(type=? x :pair))
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(define (string? x)
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"Checks if the argument is a string."
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:doc "Checks if the argument is a string."
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(type=? x :string))
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(define (lambda? x)
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"Checks if the argument is a function."
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:doc "Checks if the argument is a function."
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(type=? x :lambda))
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(define (macro? x)
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"Checks if the argument is a macro."
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:doc "Checks if the argument is a macro."
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(type=? x :macro))
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(define (special-lambda? x)
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"Checks if the argument is a special-lambda."
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:doc "Checks if the argument is a special-lambda."
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(type=? x :dynamic-macro))
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(define (built-in-function? x)
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"Checks if the argument is a built-in function."
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:doc "Checks if the argument is a built-in function."
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(type=? x :built-in-function))
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(define (callable? x)
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@@ -230,11 +229,11 @@ ithe sequence as arguemens."
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(built-in-function? x)))
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(define (end seq)
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"Returns the last pair in the sqeuence.
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:doc "Returns the last pair in the sqeuence.
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{{{example_start}}}
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(define a (list 1 2 3 4))
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(printf (end a))
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(print (end a))
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{{{example_end}}}
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"
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(if (or (null? seq) (not (pair? (rest seq))))
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@@ -242,17 +241,17 @@ ithe sequence as arguemens."
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(end (rest seq))))
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(define (last seq)
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"Returns the (first) of the last (pair) of the given sequence.
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:doc "Returns the (first) of the last (pair) of the given sequence.
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{{{example_start}}}
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(define a (list 1 2 3 4))
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(printf (last a))
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(print (last a))
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{{{example_end}}}
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"
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(first (end seq)))
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(define (extend seq elem)
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"Extends a list with the given element, by putting it in
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:doc "Extends a list with the given element, by putting it in
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the (rest) of the last element of the sequence."
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(if (pair? seq)
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(begin
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@@ -262,23 +261,23 @@ the (rest) of the last element of the sequence."
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elem))
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(define (extend2 seq elem)
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"Extends a list with the given element, by putting it in
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:doc "Extends a list with the given element, by putting it in
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the (rest) of the last element of the sequence."
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(printf "addr of (end seq)" (addr-of (end seq)))
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(print "addr of (end seq)" (addr-of (end seq)))
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(if (pair? seq)
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(let ((e (end seq)))
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(printf "addr if e inner" (addr-of e))
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(print "addr if e inner" (addr-of e))
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(mutate e (pair (first e) elem))
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seq))
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elem)
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(define (append seq elem)
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"Appends an element to a sequence, by extendeing the list
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:doc "Appends an element to a sequence, by extendeing the list
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with (pair elem nil)."
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(extend seq (pair elem ())))
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(define (length seq)
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"Returns the length of the given sequence."
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:doc "Returns the length of the given sequence."
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(if (null? seq)
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0
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(+ 1 (length (rest seq)))))
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@@ -303,21 +302,21 @@ with (pair elem nil)."
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(else (pair (first seq) (list-without-index (rest seq) (- index 1))))))
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(define (increment val)
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"Adds one to the argument."
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:doc "Adds one to the argument."
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(+ val 1))
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(define (decrement val)
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"Subtracts one from the argument."
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:doc "Subtracts one from the argument."
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(- val 1))
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(define (range :keys from :defaults-to 0 to)
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"Returns a sequence of numbers starting with the number defined by the
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key =from= and ends with the number defined in =to=."
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(define (range (:from 0) :to)
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:doc "Returns a sequence of numbers starting with the number defined
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by the key =from= and ends with the number defined in =to=."
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(when (< from to)
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(pair from (range :from (+ 1 from) :to to))))
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(define (range-while :keys from :defaults-to 0 to)
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"Returns a sequence of numbers starting with the number defined
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(define (range-while (:from 0) to)
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:doc "Returns a sequence of numbers starting with the number defined
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by the key 'from' and ends with the number defined in 'to'."
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(define result (list (copy from)))
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(define head result)
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@@ -330,7 +329,7 @@ by the key 'from' and ends with the number defined in 'to'."
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result)
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(define (map fun seq)
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"Takes a function and a sequence as arguments and returns a new
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:doc "Takes a function and a sequence as arguments and returns a new
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sequence which contains the results of using the first sequences
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elemens as argument to that function."
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(if (null? seq)
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@@ -339,17 +338,17 @@ elemens as argument to that function."
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(map fun (rest seq)))))
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(define (reduce fun seq)
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"Takes a function and a sequence as arguments and applies the
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function to the argument sequence. This only works correctly if the
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given function accepts a variable amount of parameters. If your
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funciton is limited to two arguments, use [[=reduce-binary=]]
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:doc "Takes a function and a sequence as arguments and applies the
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function to the argument sequence. This only works correctly if the
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given function accepts a variable amount of parameters. If your
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funciton is limited to two arguments, use [[=reduce-binary=]]
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instead."
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(apply fun seq))
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(define (reduce-binary fun seq)
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"Takes a function and a sequence as arguments and applies the
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:doc "Takes a function and a sequence as arguments and applies the
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function to the argument sequence. reduce-binary applies the arguments
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*pair-wise* which means it works with binary functions as compared to
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*pair-wise* which means it works with binary functions as compared to
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[[=reduce=]]."
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(if (null? (rest seq))
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(first seq)
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@@ -357,7 +356,7 @@ function to the argument sequence. reduce-binary applies the arguments
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(reduce-binary fun (rest seq)))))
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(define (filter fun seq)
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"Takes a function and a sequence as arguments and applies the
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:doc "Takes a function and a sequence as arguments and applies the
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function to every value in the sequence. If the result of that
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funciton application returns a truthy value, the original value is
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added to a list, which in the end is returned."
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@@ -392,20 +391,20 @@ added to a list, which in the end is returned."
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(enumerate-inner (rest seq) (+ 1 next-num)))))
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(enumerate-inner seq 0))
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(define (printf :keys sep :defaults-to " " end :defaults-to "\n" :rest args)
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"A wrapper for the built-in function [[=print=]] that accepts a
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variable number of arguments and also provides keywords for specifying
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the printed separators (=sep=) between the arguments and what should
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be printed after the last argument (=end=)."
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(define (printf-inner args)
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(if args
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(begin
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(print (first args))
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(when (rest args)
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(print sep))
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(printf-inner (rest args)))
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; else
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(print end)))
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;; (define (print (:sep " ") (:end "\n") . args)
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;; "A wrapper for the built-in function [[=print=]] that accepts a
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;; variable number of arguments and also provides keywords for specifying
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;; the printed separators (=sep=) between the arguments and what should
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;; be printed after the last argument (=end=)."
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;; (define (print-inner args)
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;; (if args
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;; (begin
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;; (print (first args))
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;; (when (rest args)
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;; (print sep))
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;; (print-inner (rest args)))
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;; ; else
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;; (print end)))
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(printf-inner args)
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())
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;; (print-inner args)
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;; ())
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