Retrieving an Element of an Array: Difference between revisions
Content added Content deleted
mNo edit summary |
Thundergnat (talk | contribs) (blanked page since people can't / don't read) |
||
| (106 intermediate revisions by 37 users not shown) | |||
| Line 1: | Line 1: | ||
{{DeprecatedTask}} |
|||
[http://lordsander.ifrance.com/topic/rima.htm rima 1] [http://girlwho-is.ifrance.com/img/styles/hard-disk.htm hard disk maxtor 80 gb] [http://highbulp.ifrance.com/images/small/costco-com/ costco com] [http://deviantrus.ifrance.com/topic/carnielli-gymstar/ carnielli gymstar] [http://jdawsona.ifrance.com/data/letterina/ letterina] [http://deviantrus.ifrance.com/topic/ayca-yikiliyo/ ayca yikiliyo] [http://lovereceier.ifrance.com/lib/risorsa-playstation.htm risorsa playstation 2] [http://broadwaylili.ifrance.com/content/view/foto-peni.htm foto peni] [http://lordsander.ifrance.com/topic/barzellette-michael.htm barzellette michael jackson] [http://yeeden.ifrance.com/img/styles/telefonia-g/ telefonia 3g] [http://kalian42.ifrance.com/text/directory/earth-wind/ earth wind and fire film dvd] [http://noxuhax.ifrance.com/content/view/f-secure.htm f secure] [http://igaros.ifrance.com/lib/ramones-mp/ ramones mp3] [http://tizolaa.ifrance.com/web/scarica-generale/ scarica generale vasco] [http://lordsander.ifrance.com/topic/www-melito.htm www melito it] [http://lordsander.ifrance.com/topic/testo-della.htm testo della canzone stasera la luna] [http://demurediablo.ifrance.com/library/html/case-vacanza/ case vacanza londra] [http://broadwaylili.ifrance.com/content/view/pacman-world.htm pacman world ps1 trucchi] [http://jdawsona.ifrance.com/data/fanny-bravo/ fanny bravo pornostar] [http://akmokanzen.ifrance.com/images/small/batterie-per.htm batterie per auto] [http://lovereceier.ifrance.com/lib/syndicate-of.htm syndicate of low] [http://kalian42.ifrance.com/text/directory/motorola-driver/ motorola driver] [http://tat-ooin.ifrance.com/resources/articles/ati-x.htm ati x600 pci express] [http://demurediablo.ifrance.com/library/html/storia-del/ storia del quirinale] [http://girlwho-is.ifrance.com/img/styles/b-w.htm b w asw650] [http://speedofsoun.ifrance.com/text/directory/nightrain.htm nightrain] [http://girlwho-is.ifrance.com/img/styles/hp-p.htm hp p1200] [http://demurediablo.ifrance.com/library/html/agriturismo-montepulciano/ agriturismo montepulciano] [http://lordsander.ifrance.com/topic/zurigo-.htm zurigo - brindisi] [http://voltia.ifrance.com/content/view/found-lost.htm found lost] [http://oiyaoi.ifrance.com/images/small/grande-fratello/ grande fratello svezia] [http://broadwaylili.ifrance.com/content/view/teppisti-dei.htm teppisti dei sogni] [http://speedofsoun.ifrance.com/text/directory/calandro.htm calandro] [http://highbulp.ifrance.com/images/small/bdsm-pics/ bdsm pics] [http://yeeden.ifrance.com/img/styles/venus-spa/ venus spa] [http://akmokanzen.ifrance.com/images/small/stagione-invernale.htm stagione invernale per cuba] [http://yeeden.ifrance.com/img/styles/condizionatori-classe/ condizionatori classe a senza unita] [http://broadwaylili.ifrance.com/content/view/firenze-lavorazione.htm firenze lavorazione alluminio] [http://akmokanzen.ifrance.com/images/small/dvd-recorder.htm dvd recorder pioneer dvr 433] [http://highbulp.ifrance.com/images/small/stampanti-ink/ stampanti ink jet formato a2] [http://speedofsoun.ifrance.com/text/directory/canon-minidv.htm canon minidv mvx300] [http://deviantrus.ifrance.com/topic/maurizio-merli/ maurizio merli film dvd] [http://igaros.ifrance.com/lib/terra-amata/ terra amata] [http://demurediablo.ifrance.com/library/html/ventola-hdd/ ventola hdd] [http://lordsander.ifrance.com/topic/infermiere-sexy.htm infermiere sexy] [http://oiyaoi.ifrance.com/images/small/memento-dvd/ memento dvd] [http://girlwho-is.ifrance.com/img/styles/puma-cat.htm puma cat low future] [http://highbulp.ifrance.com/images/small/dado-dodo/ dado dodo] [http://lovereceier.ifrance.com/lib/di-magia.htm di magia] [http://akmokanzen.ifrance.com/images/small/ingegneri-palermo.htm ingegneri palermo lavoro] [http://igaros.ifrance.com/lib/roadmate/ roadmate 700] [http://tat-ooin.ifrance.com/resources/articles/punta-arabi.htm punta arabi song] [http://oiyaoi.ifrance.com/images/small/tsalikis/ tsalikis] [http://lordsander.ifrance.com/topic/le-tre.htm le tre moschettiere] [http://jdawsona.ifrance.com/data/spartiti-musicali/ spartiti musicali mina] [http://noxuhax.ifrance.com/content/view/kingston-.htm kingston - memoria - 1024 mb] [http://tizolaa.ifrance.com/web/benedetto-sia/ benedetto sia l giorno parafrasi] [http://demurediablo.ifrance.com/library/html/sitecom/ sitecom] [http://broadwaylili.ifrance.com/content/view/forex-broker.htm forex broker] [http://singaporepets.ifrance.com/library/html/ricambi-yamaha.htm ricambi yamaha virago 250] [http://lovereceier.ifrance.com/lib/janssen-zacharias.htm janssen, zacharias] [http://tat-ooin.ifrance.com/resources/articles/english-latvian.htm english latvian vocabulary] [http://demurediablo.ifrance.com/library/html/polignano/ polignano] [http://broadwaylili.ifrance.com/content/view/decoder-dreambox.htm decoder dreambox 7020] [http://igaros.ifrance.com/lib/pazza/ pazza] [http://jdawsona.ifrance.com/data/modellismo-ferrari/ modellismo ferrari hot wheels] [http://igaros.ifrance.com/lib/mercedes-sl/ mercedes sl pagoda] [http://akmokanzen.ifrance.com/images/small/malattie-reumatiche.htm malattie reumatiche e sport] [http://igaros.ifrance.com/lib/fiat-panda/ fiat panda anno 2000] [http://toofarfrommaybe.ifrance.com/view/new/lg-c/ lg c2200] [http://oiyaoi.ifrance.com/images/small/nuove-immagini/ nuove immagini per advance wars ds] [http://voltia.ifrance.com/content/view/shokwave.htm shokwave] [http://speedofsoun.ifrance.com/text/directory/biaggio-antonaci.htm biaggio antonaci] [http://tat-ooin.ifrance.com/resources/articles/sommerlove.htm sommerlove] [http://highbulp.ifrance.com/images/small/est-provincia/ est (provincia del camerun)] [http://jdawsona.ifrance.com/data/siti-per/ siti per ragazzi] [http://voltia.ifrance.com/content/view/de-grenet.htm de grenet nuda] [http://akmokanzen.ifrance.com/images/small/la-sirenetta.htm la sirenetta film dvd] [http://jdawsona.ifrance.com/data/hp/ hp 5110] [http://broadwaylili.ifrance.com/content/view/il-segreto.htm il segreto della spada] [http://akmokanzen.ifrance.com/images/small/programmi-per.htm programmi per chat] [http://lordsander.ifrance.com/topic/felpe-north.htm felpe north sails uomo abbigliamento] [http://lordsander.ifrance.com/topic/jackie-chan.htm jackie chan collection. vol. 1] [http://kalian42.ifrance.com/text/directory/milano-citta/ milano citta del messico] [http://kalian42.ifrance.com/text/directory/sexy-boom/ sexy boom] [http://jdawsona.ifrance.com/data/silp/ silp] [http://yeeden.ifrance.com/img/styles/audio-analogue/ audio analogue] [http://igaros.ifrance.com/lib/toshiba-a/ toshiba a80] [http://girlwho-is.ifrance.com/img/styles/pompe-tv.htm pompe tv japan] [http://singaporepets.ifrance.com/library/html/giochi-onlaine.htm giochi onlaine] [http://lordsander.ifrance.com/topic/marghe.htm marghe] [http://highbulp.ifrance.com/images/small/eminem-lose/ eminem lose yourself] [http://yeeden.ifrance.com/img/styles/vinicius/ vinicius] [http://noxuhax.ifrance.com/content/view/il-film.htm il film rossso] [http://deviantrus.ifrance.com/topic/torna-il/ torna il conflitto coreano] [http://singaporepets.ifrance.com/library/html/desktop-prima.htm desktop prima comunione] [http://noxuhax.ifrance.com/content/view/citroen-.htm citroen zx 1.4i break avantage] [http://broadwaylili.ifrance.com/content/view/batteria-per.htm batteria per moto] [http://deviantrus.ifrance.com/topic/grazia-deledda/ grazia deledda] [http://demurediablo.ifrance.com/library/html/black-sex/ black sex clips] [http://tat-ooin.ifrance.com/resources/articles/lotteria.htm lotteria] [http://toofarfrommaybe.ifrance.com/view/new/go-home/ go home] [http://highbulp.ifrance.com/images/small/nonno-supermen/ nonno supermen] [http://kalian42.ifrance.com/text/directory/amd-/ amd 64 athlon fx] [http://oiyaoi.ifrance.com/images/small/vdata-mb/ vdata 512mb] [http://toofarfrommaybe.ifrance.com/view/new/h-b/ h b 430] [http://lovereceier.ifrance.com/lib/rex-rt.htm rex rt 200a] [http://girlwho-is.ifrance.com/img/styles/sidea.htm sidea] [http://broadwaylili.ifrance.com/content/view/nuovi-capolavori.htm nuovi capolavori del cinema italiano] [http://igaros.ifrance.com/lib/modelos-argentinas/ modelos argentinas] [http://lordsander.ifrance.com/topic/life-for.htm life for rent] [http://broadwaylili.ifrance.com/content/view/mary-s.htm mary s boy child] [http://oiyaoi.ifrance.com/images/small/www-scienze/ www scienze com] [http://demurediablo.ifrance.com/library/html/memories-of/ memories of me] [http://tat-ooin.ifrance.com/resources/articles/annunci-smart.htm annunci smart] [http://kalian42.ifrance.com/text/directory/frankys/ frankys] [http://yeeden.ifrance.com/img/styles/colonne-sonore/ colonne sonore il gladiatore] [http://voltia.ifrance.com/content/view/toner-tn.htm toner tn-7300] [http://noxuhax.ifrance.com/content/view/incontri-a.htm incontri a ischia] [http://deviantrus.ifrance.com/topic/xbox/ xbox360] [http://tat-ooin.ifrance.com/resources/articles/vdo-dayton.htm vdo dayton navigatore] [http://noxuhax.ifrance.com/content/view/ipasvi-ap.htm ipasvi ap] [http://noxuhax.ifrance.com/content/view/xio-xao.htm xio xao] [http://kalian42.ifrance.com/text/directory/www-sinudyne/ www sinudyne it] [http://toofarfrommaybe.ifrance.com/view/new/athene/ athene] [http://jdawsona.ifrance.com/data/lettori-inovix/ lettori inovix] [http://lovereceier.ifrance.com/lib/acer-gps.htm acer gps navman] [http://jdawsona.ifrance.com/data/sabor-e/ sabor e menta] [http://lordsander.ifrance.com/topic/b-c.htm b c i] [http://girlwho-is.ifrance.com/img/styles/nuova-mercedes.htm nuova mercedes a] [http://demurediablo.ifrance.com/library/html/canon-power/ canon power shot a520] [http://speedofsoun.ifrance.com/text/directory/televisione-crt.htm televisione crt 32] [http://girlwho-is.ifrance.com/img/styles/the-letter.htm the letter] [http://tat-ooin.ifrance.com/resources/articles/senso-vasco.htm senso vasco] [http://voltia.ifrance.com/content/view/sorin-copilul.htm sorin copilul de aur mama] [http://highbulp.ifrance.com/images/small/craigdavid/ craigdavid] [http://broadwaylili.ifrance.com/content/view/la-ragazza.htm la ragazza dalla pelle di corallo] [http://toofarfrommaybe.ifrance.com/view/new/r-i/ r i p shut up] [http://oiyaoi.ifrance.com/images/small/kizzuwatna/ kizzuwatna] [http://oiyaoi.ifrance.com/images/small/sony-dav/ sony dav s300] [http://kalian42.ifrance.com/text/directory/una-vita/ una vita non basta] [http://speedofsoun.ifrance.com/text/directory/kit-tuning.htm kit tuning] [http://noxuhax.ifrance.com/content/view/vaio-portatile.htm vaio portatile] [http://lordsander.ifrance.com/topic/ezzolied.htm ezzolied] [http://toofarfrommaybe.ifrance.com/view/new/dimm-ddr/ dimm ddr400 256mb] [http://yeeden.ifrance.com/img/styles/hitech/ hi-tech] [http://tizolaa.ifrance.com/web/www-pornocoppie/ www pornocoppie com] [http://highbulp.ifrance.com/images/small/nania/ nania 9 36] [http://igaros.ifrance.com/lib/studio-progettazione/ studio progettazione] [http://demurediablo.ifrance.com/library/html/amazom-com/ amazom com] [http://igaros.ifrance.com/lib/usb-/ usb 2 0 pcmcia-card] [http://yeeden.ifrance.com/img/styles/peschiera-segreteria/ peschiera segreteria libero it] [http://lordsander.ifrance.com/topic/gpl-riscaldamento.htm gpl riscaldamento] [http://noxuhax.ifrance.com/content/view/alta-marea.htm alta marea] [http://akmokanzen.ifrance.com/images/small/magi-roberto.htm magi roberto] [http://voltia.ifrance.com/content/view/dogmas-marianos.htm dogmas marianos] [http://akmokanzen.ifrance.com/images/small/gilda-c.htm gilda c vidor] [http://noxuhax.ifrance.com/content/view/leatherman-micra.htm leatherman micra] [http://deviantrus.ifrance.com/topic/prenotazione-hotel/ prenotazione hotel bibione] [http://lordsander.ifrance.com/topic/dimm-.htm dimm 512 pc133 kvr133x64c2] [http://voltia.ifrance.com/content/view/chiedere-una.htm chiedere una tesi] [http://highbulp.ifrance.com/images/small/aeron-torino/ aeron torino] [http://tizolaa.ifrance.com/web/letto-per/ letto per bambino] [http://noxuhax.ifrance.com/content/view/jvc-gzmg.htm jvc gz-mg50] [http://jdawsona.ifrance.com/data/deborah-kara/ deborah kara unger] [http://noxuhax.ifrance.com/content/view/gay-messina.htm gay messina] [http://girlwho-is.ifrance.com/img/styles/bmw-nuova.htm bmw nuova 525] [http://speedofsoun.ifrance.com/text/directory/letizia-lezza.htm letizia lezza] [http://broadwaylili.ifrance.com/content/view/foto-valeria.htm foto valeria parini] [http://kalian42.ifrance.com/text/directory/dana-am/ dana am nimic fara tine] [http://voltia.ifrance.com/content/view/quik.htm quik] [http://oiyaoi.ifrance.com/images/small/your-lates/ your lates trick] [http://tat-ooin.ifrance.com/resources/articles/donna-.htm donna 50 anni olbia] [http://broadwaylili.ifrance.com/content/view/fate-animate.htm fate animate] [http://lovereceier.ifrance.com/lib/rex-incasso.htm rex incasso a frigoriferi] [http://noxuhax.ifrance.com/content/view/vipsports.htm vipsports] [http://broadwaylili.ifrance.com/content/view/stampante.htm stampante 1200] [http://lordsander.ifrance.com/topic/mary-nel.htm mary nel mio cuore] [http://kalian42.ifrance.com/text/directory/giuseppe-verdi/ giuseppe verdi. nabucco] [http://singaporepets.ifrance.com/library/html/harman-kardon.htm harman kardon sinto-amplificatori] [http://broadwaylili.ifrance.com/content/view/prov-latina.htm prov. latina] [http://yeeden.ifrance.com/img/styles/martial-arts/ martial arts] [http://jdawsona.ifrance.com/data/prezioso-stanza/ prezioso stanza] [http://igaros.ifrance.com/lib/www-tuttomoto/ www tuttomoto it] [http://tat-ooin.ifrance.com/resources/articles/tagli-di.htm tagli di capelli per donna] [http://broadwaylili.ifrance.com/content/view/vecchie-nude.htm vecchie nude] [http://lovereceier.ifrance.com/lib/selphy-ds.htm selphy ds700] [http://yeeden.ifrance.com/img/styles/accesso-universale/ accesso universale] [http://demurediablo.ifrance.com/library/html/prefettura-cosenza/ prefettura cosenza] [http://tizolaa.ifrance.com/web/haruka/ haruka] [http://yeeden.ifrance.com/img/styles/replay-di/ replay di un omicidio] [http://demurediablo.ifrance.com/library/html/impianto-vivavoce/ impianto vivavoce] [http://broadwaylili.ifrance.com/content/view/bologna-praga.htm bologna praga] [http://jdawsona.ifrance.com/data/containers/ containers] [http://speedofsoun.ifrance.com/text/directory/bed-breakfast.htm bed breakfast germania] [http://noxuhax.ifrance.com/content/view/discoteca-la.htm discoteca la villa] [http://deviantrus.ifrance.com/topic/gli-/ gli incredibili] [http://oiyaoi.ifrance.com/images/small/bazaar-progettazione/ bazaar progettazione] [http://yeeden.ifrance.com/img/styles/segreteria-telecom/ segreteria telecom libretto] [http://tat-ooin.ifrance.com/resources/articles/asics-calzature.htm asics calzature uomo] {{task}} |
|||
'''Please do not add new code, and merge existing code to the [[Arrays]] task.''' |
|||
In this task, the goal is to retrieve an element of an [[array]]. |
In this task, the goal is to retrieve an element of an [[array]]. |
||
==[[4D]]== |
|||
[[Category:4D]] |
|||
` first element |
|||
$elem:=$array{1} |
|||
==[[X86 assembly]]== |
|||
[[Category:x86 assembly]] |
|||
'''Assembler:''' nasm |
|||
mov esi, array_offset |
|||
mov ebx, 2 |
|||
mov eax, [esi ebx*4] |
|||
==[[ActionScript]]== |
|||
[[Category:ActionScript]] |
|||
var arr:Array = new Array(1,2,3); |
|||
var myVar:Number = arr[1]; |
|||
// the value of myVar is: 2 |
|||
==[[Ada]]== |
|||
[[Category:Ada]] |
|||
Array indexed by an enumerated type. Ada enumerated types are discrete non-numeric types. |
|||
type Days is (Mon, Tue, Wed, Thu, Fri, Sat, Sun); |
|||
type Daily_Counts is array(Days) of Natural; |
|||
This_week : Daily_Counts := (200, 212, 175 220, 201, 120, 0); |
|||
Monday_Sales : Natural; |
|||
Monday_Sales := This_Week(Mon); |
|||
Monday_Sales is assigned 200 |
|||
==[[AppleScript]]== |
|||
[[Category:AppleScript]] |
|||
on getArrayValue(array, location) |
|||
-- very important -- The list index starts at 1 not 0 |
|||
return item location in array |
|||
end getArrayValue |
|||
==[[C]]== |
|||
[[Category:C]] |
|||
int array_index(int array[], int index) { |
|||
return array[index]; |
|||
} |
|||
==[[C sharp|C#]]== |
|||
[[Category:C sharp|C#]] |
|||
int getArrayValue( int values[], int index ) { |
|||
return values[index]; |
|||
} |
|||
==[[C plus plus|C ]]== |
|||
[[Category:C plus plus|C ]] |
|||
template<typename T> |
|||
T array_index(T array[], size_t index) { |
|||
return array[index]; |
|||
} |
|||
==[[ColdFusion]]== |
|||
[[Category:ColdFusion]] |
|||
<cfset arr = ArrayNew(1)> |
|||
<cfset arr[1] = "one"> |
|||
<cfset arr[2] = "2"> |
|||
<cfset arr[3] = 3> |
|||
<cfset var = arr[1]> |
|||
The value of '''var''' is "one" |
|||
''ColdFusion Arrays are '''NOT''' zero-based, their index begins at '''1''''' |
|||
==[[Common Lisp]]== |
|||
[[Category:Common Lisp]] |
|||
(defun array-value (array index) |
|||
(aref array index)) |
|||
==[[Delphi/Object Pascal/Turbo Pascal/Standard Pascal]]== |
|||
[[Category:Pascal]] |
|||
Array's in all the flavors of pascal can be of any valid base type, or user defined type ( which are all made up of base types ) and are multi-dimensional. With Delphi dynamic arrays were defined but had been used in pascal since its inseption. |
|||
A Static array defintion: |
|||
foo : array[1..10] of integer; { The base index is ONE } |
|||
The base index can be freely chosen: |
|||
foo: array[7 .. 16] of integer; { The base index is 7 } |
|||
Indeed, the "1 .. 10" resp. "7 .. 16" are actually ''types'': they are integer subrange types. Arrays can also be indexed by enumeration types or enumeration subrange types: |
|||
type |
|||
rainbowcolor = (red, orange, yellow, green, blue, violet); |
|||
var |
|||
foo: array[rainbowcolor] of integer; |
|||
bar: array[yellow .. blue] of integer; |
|||
i: integer |
|||
begin |
|||
i := foo[red]; { allowed indices are red, orange, yellow, green, blue, violet } |
|||
i := bar[green]; { allowed indices are yellow, green, blue } |
|||
end; |
|||
A Dynamic Array type in Delphi: |
|||
foo : array of integer ; // The base index is ZERO |
|||
An "old school" dynamic array in the various flavors of pascal |
|||
foo : array[0..0] of integer; // The base index is ZERO |
|||
A dynamic array in Extended Pascal: |
|||
type |
|||
intarray(n: integer) = array[1 .. n] of integer; { base index 1 } |
|||
var |
|||
foo: ^intarray; |
|||
begin |
|||
new(foo, 10); { foo now has index 1 to 10 } |
|||
i := foo[2]; |
|||
dispose(foo); { get rid of the array } |
|||
end; |
|||
In the case of the static array, the compiler generates the code to allocate the required memory to hold 10 integers. |
|||
In the Delphi style ---dynamic--- array you must set its length: |
|||
SetLength(foo,10); // this array will no hold 10 integers |
|||
In the "old school" style of dynamic arrays, you created a point to the zero length declaration and then allocated memory to it with GetMem |
|||
pFoo : ^Foo ; |
|||
Foo : array[0..0] of integer ; |
|||
All arrays are accessed the same way regardless of declaration method. |
|||
i : integer ; |
|||
i := foo[n] ; |
|||
where n is the array index who's base is either 1 or 0 depending on how it was declared. |
|||
==[[Erlang]]== |
|||
[[Category:Erlang]] |
|||
Erlang lists are 1-based which means that the index must be within the bounds (1 .. length(List)): |
|||
Value = lists:nth(Index, List). |
|||
==[[Forth]]== |
|||
[[Category:Forth]] |
|||
Forth does not have special syntax for array access. Address arithmetic is used to access contiguous memory. |
|||
create array 1 , 2 , 3 , 4 , |
|||
array 2 cells @ . \ 3 |
|||
==[[IDL]]== |
|||
[[Category:IDL]] |
|||
; this is allowed: |
|||
result = arr(5) |
|||
; but this is preferred: |
|||
result = arr[5] |
|||
The form with square brackets is preferred as it unambiguously constitutes array access, while the version with round ones can conflict with a function call if there are both a function and an array with the same name <tt>arr</tt>. |
|||
==[[Java]]== |
|||
[[Category:Java]] |
|||
public Object getArrayElem(Object[] array, int pos) { |
|||
return array[pos]; |
|||
} |
|||
==[[JavaScript]]== |
|||
[[Category:JavaScript]] |
|||
var element = array[index]; |
|||
==[[mIRC]]== |
|||
[[Category:mIRC Scripting Language]] |
|||
'''Interpeter:''' mIRC Script Editor |
|||
'''Library:''' [[mArray Snippet]] |
|||
[[Category:mArray Snippet]] |
|||
alias readmyarray { echo -a $array_read(MyArray, 2, 3) } |
|||
==[[Perl]]== |
|||
[[Category:Perl]] |
|||
'''Interpreter:''' [[Perl]] 5.8.8 |
|||
$elem = $array[0]; |
|||
==[[PHP]]== |
|||
[[Category:PHP]] |
|||
$array = array('php', 'has', 'arrays'); |
|||
// First element |
|||
$elem = $array[0]; |
|||
==[[Pop11]]== |
|||
[[Category:Pop11]] |
|||
lvars ar = {1 two 'three'}; |
|||
lvars elem; |
|||
;;; Access second element and assign to variable elem |
|||
ar(2) -> elem; |
|||
This example uses the simplest possible array (a vector). Pop11 has |
|||
more general arrays, but in all cases access follows the same pattern, |
|||
and look the same as procedure (function) call. |
|||
==[[Python]]== |
|||
[[Category:Python]] |
|||
'''Interpreter:''' Python 2.5 |
|||
The item is an element in a list at a given index |
|||
item = aList[index] |
|||
or |
|||
To use a list like a stack be it FIFO/LIFO |
|||
aList.pop() # Pop last item in a list |
|||
aList.pop(0) # Pop first item in a list |
|||
'''Note:''' When using the pop() method, the element is removed from the list. |
|||
==[[Ruby]]== |
|||
[[Category:Ruby]] |
|||
ary = ['Ruby','rules','big','time'] |
|||
#the first element |
|||
element = ary[0] |
|||
#or |
|||
element = ary.first |
|||
# => element = 'Ruby' |
|||
#the last element |
|||
element = ary[-1] |
|||
#or |
|||
element = ary.last |
|||
# => element = 'time' |
|||
#retrieving different values at once |
|||
elements = ary.values_at(0,2,3) |
|||
# => elements = ['Ruby','big','time'] |
|||
#select the first element of length 3 |
|||
element = ary.find{|el|el.length==3} |
|||
# => element = "big" |
|||
==[[Smalltalk]]== |
|||
[[Category:Smalltalk]] |
|||
"Retrieve second element of an array" |
|||
index := 2 |
|||
element := anArray at: index |
|||
==[[Tcl]]== |
|||
[[Category:Tcl]] |
|||
All arrays in Tcl are associative. If "key" is the variable that holds the key of the element to be retrieved, then |
|||
set result $array($key) |
|||
==[[Toka]]== |
|||
[[Category:Toka]] |
|||
This retrieves the value 20 from the second item in the array: |
|||
3 cells is-array table |
|||
( Populate the array ) |
|||
10 0 table put-element |
|||
20 1 table put-element |
|||
30 2 table put-element |
|||
table 1 get-element |
|||
Latest revision as of 15:06, 29 November 2019
Retrieving an Element of an Array was a programming task. It has been deprecated for reasons that are discussed in its talk page.
Please do not add new code, and merge existing code to the Arrays task.
In this task, the goal is to retrieve an element of an array.