PLT DrScheme: Beginning Student Language

• PROGRAM
  • DEF-EXP ...
• DEF-EXP
  • DEFINITION
  • EXPRESSION
• DEFINITION
  • (define (NAME NAME ...) EXPRESSION)
  • (define-struct NAME (NAME ...))
  • (define NAME EXPRESSION)
  • (define NAME (lambda (NAME NAME ...) EXPRESSION))
• EXPRESSION
  • (NAME EXPRESSION ...)
  • (PRIM-OP EXPRESSION ...)
  • (cond (EXPRESSION EXPRESSION) (EXPRESSION EXPRESSION) ...)
  • (cond (EXPRESSION EXPRESSION) ... (else EXPRESSION))
  • (if EXPRESSION EXPRESSION EXPRESSION)
  • (and EXPRESSION EXPRESSION EXPRESSION ...)
  • (or EXPRESSION EXPRESSION EXPRESSION ...)
  • empty
  • NAME
  • 'TAG
  • NUMBER
  • true
  • false
  • STRING
  • CHARACTER
• NAME
  • a sequence of keyboard-characters not including: space " , ' ` ( ) [ ] { } | ;
• PRIM-OPS
  • Numbers: Integers, Rationals, Reals, Complex, Exacts, Inexacts
    • number? : (any -> boolean)
    • = : (num num num ... -> boolean)
    • < : (real real real ... -> boolean)
    • > : (real real real ... -> boolean)
    • <= : (real real real ... -> boolean)
    • >= : (real real -> boolean)
    • + : (num num num ... -> num)
    • - : (num num ... -> num)
    • * : (num num num ... -> num)
    • / : (num num num ... -> num)
    • max : (num num ... -> num)
    • min : (num num ... -> num)
    • quotient : (int int -> int)
    • remainder : (int int -> int)
    • modulo : (int int -> int)
    • square : (num -> num)
    • sqrt : (num -> num)
    • expt : (num num -> num)
    • abs : (real -> real)
    • exp : (num -> num)
    • log : (num -> num)
    • sin : (num -> num)
    • cos : (num -> num)
    • tan : (num -> num)
    • asin : (num -> num)
    • acos : (num -> num)
    • atan : (num -> num)
    • sinh : (num -> num)
    • cosh : (num -> num)
    • exact? : (num -> bool)
    • integer? : (any -> bool)
    • zero? : (number -> bool)
    • odd? : (integer -> bool)
    • even? : (integer -> bool)
    • add1 : (number -> number)
    • sub1 : (number -> number)
    • lcm : (int int ... -> int)
    • gcd : (int int ... -> int)
    • rational? : (any -> bool)
    • numerator : (rat -> int)
    • denominator : (rat -> int)
    • inexact? : (num -> bool)
    • real? : (any -> bool)
    • floor : (real -> int)
    • ceiling : (real -> int)
    • round : (real -> int)
    • complex? : (any -> bool)
    • make-polar : (real real -> num)
    • real-part : (num -> real)
    • imag-part : (num -> real)
    • magnitude : (num -> real)
    • angle : (num -> real)
    • conjugate : (num -> num)
    • exact->inexact : (num -> num)
    • inexact->exact : (num -> num)
    • number->string : (num -> string)
    • integer->char : (int -> char)
    • random : (int -> int)
    • current-seconds : (-> int)
    • e : real
    • pi : real
  • Booleans
    • boolean? : (any -> boolean)
    • boolean=? : (boolean boolean -> boolean)
    • not : (boolean -> boolean)
  • Symbols
    • symbol? : (any -> boolean)
    • symbol=? : (symbol symbol -> boolean)
  • Lists
    • cons? : (any -> boolean)
    • pair? : (any -> boolean)
    • empty? : (any -> boolean)
    • null? : (any -> boolean)
    • list? : (any -> boolean)
    • cons : (x (listof x) -> (listof x))
    • first : ((cons y (listof x)) -> y)
    • car : ((cons y (listof x)) -> y)
    • rest : ((cons y (listof x)) -> (listof x))
    • cdr : ((cons y (listof x)) -> (listof x))
    • second : ((cons z (cons y (listof x))) -> y)
    • third : ((cons w (cons z (cons y (listof x)))) -> y)
    • fourth : ((listof y) -> y)
    • fifth : ((listof y) -> y)
    • sixth : ((listof y) -> y)
    • seventh : ((listof y) -> y)
    • eighth : ((listof y) -> y)
    • list-ref : ((listof x) number -> x)
    • list : (any ... -> (listof any))
    • append : ((listof any) ... -> (listof any))
    • length : (list -> number)
    • memq : (any list -> (union false list))
    • reverse : (list -> list)
    • assq : (x (listof (cons x y)) -> (union false (cons x y)))
    • equal? : (list list -> boolean)
  • Characters
    • char? : (any -> boolean)
    • char=? : (char char ... -> boolean)
    • char<? : (char char ... -> boolean)
    • char>? : (char char ... -> boolean)
    • char<=? : (char char ... -> boolean)
    • char>=? : (char char ... -> boolean)
    • char-ci=? : (char char ... -> boolean)
    • char-ci<? : (char char ... -> boolean)
    • char-ci>? : (char char ... -> boolean)
    • char-ci<=? : (char char ... -> boolean)
    • char-ci>=? : (char char ... -> boolean)
    • char-numeric? : (char -> boolean)
    • char-alphabetic? : (char -> boolean)
    • char-whitespace? : (char -> boolean)
    • char-upper-case? : (char -> boolean)
    • char-lower-case? : (char -> boolean)
    • char-upcase : (char -> char)
    • char-downcase : (char -> char)
    • char->integer : (char -> integer)
  • Strings
    • string? : (any -> boolean)
    • string-length : (string -> nat)
    • make-string : (nat char -> string)
    • string-ref : (string nat -> char)
    • substring : (string nat nat -> string)
    • string-copy : (string -> string)
    • string-append : (string ... -> string)
    • string=? : (string string ... -> boolean)
    • string<? : (string string ... -> boolean)
    • string>? : (string string ... -> boolean)
    • string<=? : (string string ... -> boolean)
    • string>=? : (string string ... -> boolean)
    • string-ci=? : (string string ... -> boolean)
    • string-ci<? : (string string ... -> boolean)
    • string-ci>? : (string string ... -> boolean)
    • string-ci<=? : (string string ... -> boolean)
    • string-ci>=? : (string string ... -> boolean)
    • string->number : (string -> (union number false))
    • string->list : (string -> (listof char))
    • list->string : ((listof char) -> string)
    • format : (string any ... -> string)
  • Posns
    • make-posn : (number number -> posn)
    • posn? : (anything -> boolean)
    • posn-x : (posn -> number)
    • posn-y : (posn -> number)
  • Misc
    • error : (symbol string -> void)
    • struct? : (any -> boolean)
    • equal? : (any any -> boolean)
    • eq? : (any any -> boolean)
    • exit : (-> void)
    • eval : (any -> any)
    • procedure? : (any -> boolean)
    • time-apply : ((any ... -> any) any ... -> any)
    • apply : ((any ... -> any) any ... -> any)
    • values : (any ... -> (values any ...))
    • printf : (string any ... -> void)
    • void : (-> void)
    • void? : (any -> boolean)
    • raise : (any -> void)
    • make-exn:else : (string continuation-mark-set -> exn)
    • current-continuation-marks : (-> continuation-mark-set)

Generic Errors
• Out of Context Keywords
• Empty Combination
• Expected an identifier
• Repeated Identifier
• Invalid Identifier
• Cannot Bind Keywords
• Reading Syntax Error
• Scanning Syntax Error

Undocumented Forms
• struct
• nor
• nand
• case-lambda
• define-values
• require-library
• require-relative-library
• reference-file
• polymorphic
• mrspidey:control
• :
• type:
• define-type
• define-constructor
• define-macro
• let-macro
• lambda