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Racket Cheat Sheet, Exercises of Advanced Computer Programming

Artevelde HogeschoolAdvanced Computer Programming

Racket Cheat Sheet. Version 7.4. Jay McCarthy. August 4, 2019. EssentialsSitesmain download docs gitCommunitypackages users@ dev@ irc.

Typology: Exercises

2021/2022

Uploaded on 08/05/2022

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dirk88 🇧🇪

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Racket Cheat Sheet
Version 7.4
Jay McCarthy
August 4, 2019
EssentialsSitesmain download docs gitCommunitypackages users@ dev@ irc
slack twitterRunningPut #lang racket "Hello, world!" in hello.rkt
and run racket hello.rktPrimitivesNumbersLiteralsinteger 1rational 1/2
complex 1+2i floating 3.14 double 6.02e+23 hex #x29 octal #o32 binary
#b010101Arithmetic+ - * / quotient remainder modulo add1 sub1 max min
round floor ceiling sqrt expt exp log sin ... atanCompare= < <= >
>=Bitwisebitwise-ior bitwise-and bitwise-xor bitwise-not arithmetic-
shift integer-lengthFormatnumber->string string->number real->decimal-
stringTestnumber? complex? ... exact-nonnegative-integer? ... zero?
positive? negative? even? odd? exact? inexact?MiscrandomMatch Pattern(?
number? n)42StringsLiterals"Racket" quoting "a \" approaches!" unicode
"λx:(µα.αÑα).xx"Createmake-string string string-append build-string
string-joinObservestring-length string-ref substring string-split
in-stringModifystring-downcase string-upcase string-trimTeststring?
string=? string<=? string-ci<=?Regexp#rx"a|b" #rx"^c(a|d)+r$" regexp-
quote regexp-match regexp-split regexp-replace regexp-replace*Match
Pattern(?string? s)"Banana?"BytesLiterals#"rawbytes\0"Createmake-
bytes bytesNumbersinteger->integer-bytes real->floating-point-
bytesObservebytes-length bytes-ref subbytes in-bytesModifybytes-set!
bytes-copy! bytes-fill!Conversionbytes->string/utf-8
string->bytes/utf-8Testbytes? bytes=?Match Pattern(?bytes? b)#"0xDEAD-
BEEF"OtherBooleans#t #f not equal?Characters#\a #\tab #\λchar? char-
>integer integer->char char<=? ... char-alphabetic? ...Symbols'Racket
symbol? eq? string->symbol gensymBoxesbox? box unbox set-box!
box-cas!Proceduresprocedure? apply compose compose1 keyword-apply
procedure-rename procedure-arity curry arity-includes?Voidvoid?
voidUndefinedundefinedDataListsCreateempty list list* build-list
for/listObserveempty? list? pair? length list-ref member count argmin
argmaxUseappend reverse map andmap ormap foldr in-listModifyfilter
remove ... sort take drop split-at partition remove-duplicates
shuffleMatch Pattern(list a b c ) (list* a b more ) (list top more
1
pf3
pf4

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Download Racket Cheat Sheet and more Exercises Advanced Computer Programming in PDF only on Docsity!

Racket Cheat Sheet

Version 7.

Jay McCarthy

August 4, 2019

EssentialsSitesmain download docs gitCommunitypackages users@ dev@ irc slack twitterRunningPut #lang racket "Hello, world!" in hello.rkt and run racket hello.rktPrimitivesNumbersLiteralsinteger 1 rational 1/ complex 1+2i floating 3.14 double 6.02e+23 hex #x29 octal #o32 binary #b010101Arithmetic+ - * / quotient remainder modulo add1 sub1 max min round floor ceiling sqrt expt exp log sin ... atanCompare= < <= >

=Bitwisebitwise-ior bitwise-and bitwise-xor bitwise-not arithmetic- shift integer-lengthFormatnumber->string string->number real->decimal- stringTestnumber? complex? ... exact-nonnegative-integer? ... zero? positive? negative? even? odd? exact? inexact?MiscrandomMatch Pattern(? number? n) 42StringsLiterals"Racket" quoting "a " approaches!" unicode "λx:(μα.αÑα).xx"Createmake-string string string-append build-string string-joinObservestring-length string-ref substring string-split in-stringModifystring-downcase string-upcase string-trimTeststring? string=? string<=? string-ci<=?Regexp#rx"a|b" #rx"^c(a|d)+r$" regexp- quote regexp-match regexp-split regexp-replace regexp-replace*Match Pattern(? string? s) "Banana?"BytesLiterals#"rawbytes\0"Createmake- bytes bytesNumbersinteger->integer-bytes real->floating-point- bytesObservebytes-length bytes-ref subbytes in-bytesModifybytes-set! bytes-copy! bytes-fill!Conversionbytes->string/utf- string->bytes/utf-8Testbytes? bytes=?Match Pattern(? bytes? b) #"0xDEAD- BEEF"OtherBooleans#t #f not equal?Characters#\a #\tab #\λ char? char- integer integer->char char<=? ... char-alphabetic? ...Symbols'Racket symbol? eq? string->symbol gensymBoxesbox? box unbox set-box!

box-cas!Proceduresprocedure? apply compose compose1 keyword-apply procedure-rename procedure-arity curry arity-includes?Voidvoid? voidUndefinedundefinedDataListsCreateempty list list* build-list for/listObserveempty? list? pair? length list-ref member count argmin argmaxUseappend reverse map andmap ormap foldr in-listModifyfilter remove ... sort take drop split-at partition remove-duplicates shuffleMatch Pattern(list a b c ) (list* a b more ) (list top more

...)Immutable HashCreatehash hasheqObservehash? hash-ref hash-has-key? hash-count in-hash in-hash-keys in-hash-valuesModifyhash-set hash- update hash-removeVectorCreatebuild-vector vector make-vector list-

vectorObservevector? vector-length vector-ref in-vectorModifyvector- set! vector-fill! vector-copy! vector-map!Match Pattern(vector x y z ) (vector x y calabi–yau ...)StreamsCreatestream stream* empty- streamObservestream-empty? stream-first stream-rest in-streamMutable HashCreatemake-hash make-hasheqObservehash? hash-ref hash-has-key? hash-count in-hash in-hash-keys in-hash-valuesModifyhash-set! hash- ref! hash-update! hash-remove!SystemsInput/OutputFormatting„a „v „s „e „r pretty-formatInputread read-bytes peek-byteOutputwrite write- bytes display displayln pretty-printPorts and Fileswith-input-from- file with-output-to-file flush-output file-position make-pipe with- output-to-string with-input-from-string port->bytes port->lines ...FilesPathsbuild-path bytes->path path->bytes path-replace-suffix ...Filesfile-exists? rename-file-or-directory copy-directory/files current-directory make-directory delete-directory/files directory- list filesystem-change-evt file->bytes file->lines make-temporary- fileMiscellaneousTimecurrent-seconds current-inexact-milliseconds date- string date-display-formatCommand-Line Parsingcommand-lineFFIffi- lib _uint32 ... _fun malloc freeNetworkingTCPtcp-listen tcp-connect tcp-accept tcp-closeHTTPhttp-conn http-conn-open! http-conn-send! http-conn-recv! http-conn-sendrecv! http-sendrecvURLsstring->url url->string url-queryEmailsmtp-send-message imap-connect ...JSONwrite- json read-jsonXMLread-xml write-xml write-xexprDatabasespostgresql- connect mysql-connect sqlite3-connect query-exec query-rows pre- pare start-transaction ...SecurityCustodiansmake-custodian custodian- shutdown-all current-custodianSandboxesmake-evaluator make-module- evaluatorConcurrencyThreadsthread kill-thread thread-wait make-thread- groupEventssync choice-evt wrap-evt handle-evt alarm-evt ...Channelsmake- channel channel-get channel-putSemaphoresmake-semaphore semaphore-post semaphore-waitAsync Channelsmake-async-channel async-channel-get async- channel-putParallelismFuturesfuture touch processor-count make-fsemaphore ...Placesdynamic-place place place-wait place-wait place-channel ...Pro- cessessubprocess systemSyntax (Beginner)BasicsModules(module+ main body ...) (module+ test body ...) (require mod-path ) (provide id )S-expressionsquote '(a b c) quasiquote unquote `(1 2 ,(+ 1 2))Procedure Applications(fn arg1 arg2 ) keyword args (fn arg1 #:key arg2 ) (apply fn arg1 (list arg2 ))Procedures(lambda (x) x) (λ (x) x) (λ (x [opt 1]) (+ x opt)) (λ (x #:req key) (+ x key)) (λ (x #:opt [key 1]) (+ x key))Binding(let ([x 1] [y 2]) (+ x y)) (let ([x 1] [x (+ x 1)]) x)Conditionals(if (zero? x) 0 (/ 1 x)) (cond [(even? x ) 0] [(odd? x ) 1]

parser cfg-parserToolsPackagesInspectionraco pkg showFindingpkgs.racket- lang.orgInstallingraco pkg installUpdatingraco pkg updateRemovingraco pkg removeMiscellaneousCompilingraco make program.rktTestingraco test program.rkt a-directoryBuilding Executablesraco exe program.rktExtending DrRacketdrracket:language:simple-module-based-language->module-based- language-mixinSlidesslide standard-fish code