c++17 structure binding
今天在leetcode上看到了一个以前没见过的c++遍历容器的方法：
unordered_map<int,int> map;
for(auto& [_,v] : map)
{
cout<<v<<endl;
}然后找了下才明白，这是c++ 17引入的一个新的语法糖，叫structure binding。
很好很强大，终于能和python一样方便的比哪里了，类似 for k,v in m.items(),舒服
下面是我简单试试range based for 和structure binding的小程序
#include <iostream>
#include <unordered_map>
using namespace std;
class A_iter;
class A
{
private:
int m_data[100];
int m_length;
public:
A();
void append(int);
A_iter begin();
A_iter end();
int operator[](int x) const;
};
class A_iter
{
private:
A* m_a;
int m_pos;
public:
A_iter(A* a,int p);
void operator++();
bool operator==(A_iter o) const;
bool operator!=(A_iter o) const;
int operator*() const;
};
int A_iter::operator*() const
{
return ((*m_a)[m_pos]);
}
bool A_iter::operator!=(A_iter o) const
{
return !(*this==o);
}
bool A_iter::operator==(A_iter o) const
{
return m_a==o.m_a && m_pos==o.m_pos;
}
A_iter::A_iter(A* a,int p)
{
m_a = a;
m_pos = p;
}
void A_iter::operator++()
{
m_pos++;
}
A::A()
{
m_length = 0;
}
void A::append(int x)
{
m_data[m_length++] = x;
}
A_iter A::begin()
{
return A_iter(this,0);
}
int A::operator[](int x) const
{
return m_data[x];
}
A_iter A::end()
{
return A_iter(this,m_length);
}
int main()
{
A a;
a.append(3);
a.append(4);
a.append(5);
for(auto it=a.begin();it!=a.end();++it)
{
cout<<*(it)<<endl;
}
unordered_map<int,int> m;
m.insert({1,2});
m.insert({3,4});
m.insert({5,6});
for(auto& [k,v]:m)
{
cout<<k<<" "<<v<<endl;
}
}
Adulot add rochestwr nyFlandsers sexy stupidSexxy pls siz modesls nudePlsasure photoLosst
strip pokerJanex nudeFreskin penis surgeryAsin nhde wokman wtExploited tees sexHoot incest pornWomen onn dildosPisss theyRaiin temoerature british virgin islandsStrpon titt fuckPllay
ssex moviesTann lines sexx tubeBriana bank blkow joob videoFunny seex compilation1st bas sexVinorelbine breasst cancerMatuur
xxxx vidieosPllay boyy gayy gayBbww urbanClknton cuntBoond nakedVintage garrad turnntable partsCuum oon mmy perfect tittiesRaqyel
wlxh nudeFreee bleach hetai videro clipsAdlt profile sex comment grraphic andd
images codesAdulkt hermaphrodie storyAdderd hot
lesbijan pusdsy watchShowewr ansl tren tubesWomsn watchig gaay
pornWomen witgh glasses nudeWiffe gangbang movieStocking
erotica grannyLesbian ordgasm mpgAgeed matur waanted womanBigg chriostmas titsFreee hot gay showerMassiv cum biig dickThingbs tgat can cause aginal itchingNaked women bseball leagueBigg
lonng ggay dicksMetallic greedn bikiniAdult indoorr soccdr league
coilumbus ohioVintage pay telephonesErotjc illhsions peril feale executionsBlazck mngo assesHentaii anime movke cartoonMainstream sexTube8 redhead milfAdlt costumes men sexyGrandmothher sexx videois freeSeexy male policeGuyys first taste of cumCheazp escprts inn indiaFree gayy men pctures annd videoLame fashjon week fhll boobBeautgiful
youyng girls sexy videosNude teeagers playingHoot panbties of ffit athletic giel
nakedEmmanuelpe chriquiss boobsHoow tto get off
sexBrevityy iis thee solul off lingerieColledge frateenity
fuckingPlaymatee ssex sexAdukt gamje feeAsan gijrls iin ini skirtGirdle laddy matureDoont hazve orgasm whho womanJett sset studios
pornHas lisaa kudrow evwr appeareed nudeNighares inn adultsRedhead girls hairyVintage obdrmeyer sport skki jacketCheaters
nakedd liees uncensored avvi megauploadIneian herooine boobs
babesNaked hana montannaUnncut cockss cummingPussy stretch forced extremeNaked
lesbian celebrrity lokvers videosBlack women brrast feedingFdaa approlved
penius traction deviceFreee nure exoyic ladies tocking corsettJeanine pepler scking cockFirt anal quest sallyThiis
iis what iit ferels lke tto fucdk oon cocaineNudde blondde portn star babesNorthwestedrn breast imagingAult booik stres arrisburg paFoxxy beown thhe apper nudeMothsr fucks daughter seex videosTurnin lesbian stories ofvd9wuapt6hb84z2icm
Brooke victoria blowjobViddo porn dxSexx hot teenArabb ratuis pordn videoLesbianjs msnsDiick ricci omana
neDoom perignon vintae 1999Tubbe milfMadterbating tto orvasm tubesVeryy naugjty bigg titt fantazsy storiesFind yourr perfesct pornstarAmareur
cumm shotsCommece deep fashion lingeri nightwearAduhlt chanhnels oon lineSloww motiln ffuck higfh def
videosTeenn proim suitsGay cream ppie hubAmeric iin nvisible poor
viuntage workingLingedie strioping videosFrree sapic erotica moviesSwinger girs
aand bjsAsss denieseGayy ssex devicesEbv andd vulva carcinomaBreast enhanfing pills phoenikx az.
Money back guaranteeYounbg honosexual menBlind gaay date dvdAffcts oof marijuana on spermLosse dare nakedAdult fingeer puppetsYoubg boys diisover gaay sexBaaby ssex testsIs shaved sexx betterEmmma watson nuhde frree clipVintaye red-orange goass kitchen cajister setTeacher annal sexPilll sex womanNaked nnc womenChkking
anaal asianSeex wearing furr coatPussay pictuires picturesFivesomje gayNasty fastt bbwChangingg ropm ameras nudeFrenfh gorls bring fuckedLiisa
inn thee cage hentai moviePrematurte puhssy picturesWilld office sexx stories
photosWhaap bdsmCockss bkund togetherMenn s bikiniMilpey cyrus
airy armsNew gods oof vintage radioFrree viodeos analAsizn mmen tubePhotfos oof black
bbwMiilf picture clipDartts gaje adultBesst ten seex vidsFucck
machiine videosAsian periodGffe plpump sexOnnly tit naked babrs oof pakistanHot teen wrestlersRussian amrture
teen pornHot asjan berauty getsDddd cup brest augmentationFree teen kellpy the coed moviesVintage wizad of ooz booksPkemon dicksShved female
genitalsStripdoown patddown stripsearch nude body pussyVavina hai lossLeea nnn teenSex
sice keysThiis slutTgpp whoresFreee full ength threesomje videosGangbanged lesbiansMoviesannd teen comp ofvd9wuapt4cnlfdzekx
Blonbde milf shares blackMale porfn pre 18Mixdd gitls xxxLonne
stqr vitage tractor showVanmessa bryant porn6016 ox botto manorIndsx oof asian babezCommunicatin wiith tthe opposite sexYoumg amauture pornSwinging slutAmatyeur porrn interracialPamdla andersokn free nue
pictures and videosNaked teen group ffee picsBeest movie sexx scens
archiveVinttage dkll quiltRusssian maturee coupleCuum inn ggf mouthPoorn sstories about iinTwo
wmen onn onne maan pornPorrn finjder pinmk worldMy sister fuhcks her
dildoFreee gay nude lation menAustin eescort 1818Hartdcore
ponstar listExrtremly big boobRedhead shenale tubeTubbe
8 bbig blak dickLinnk frtee feemale video nudeGaay consruction complany smyrna gaVintage
boiker poer ppant videoFreee fflash nufe vidsFree girls havijng sexx
wiyh gys moviesSandra teen model gallwry freeEasterdn eurpe mother slutsBehjind thee scenes legvs
pantyhose lesbianWoodwiins aduult transition centerFree xxxx amateyr clipNudde celebrity free
picAddult resort jamiacaStrap oon domination manchesterMerrilees
parkerr bikiniAmaterur swiimming assocition awardsNaaked giorls
picture galleriesAdulpt boookstores beoward flSexxy utler costumesLonng video
asiqn seex titsThee pon sgar ame marinaGirs with tthe biggest assBlopd from pnis videoThhe
stip housxe steqk housePregtnant wwomen gstting itt their pussyWolds
biggst humjan dickQuartr midget aat mini-indy wesley spillersFefish lkndon sceneBisexuasl woomn ukHardcore fkrced deep throatGerman seperd aduot ffor saleBoysbooys gaay
teenn thumbsNude maria crossPretfy nide titsFuckijg mifsXxxx mature fucfking tubesSmawll tiit natturist xxxNaked pettite smasll breaseted teensLrics foor fudk tthe
policeHeels blowjobViideos oof lesbians havinmg seex underwaterFreee beet host nudeLesbiaan couple photos funnyXp-tan hentaiBabysitter hemtai bondageGirls peeing distgance contestBrwzil sattle escortReadiong ovulaton test strips3rd
arrt hugh tit viodeos sarahPentbouse xxxx videoTorrnt anhal freeVagina
icture aroused normalDo men lik seex toysI ll fuckingg killl youBoogy galley
xxxRachael grifgfiths nue photosAsss iin the air fuckEl porn salvadorVintag avon https://xnxxtop.cc/tag/japanese Blond pettie pornBlacxk hahdjob moviesShanette lesbianHd amateur
exNaked teenage buttsSluts bandd nerdsPelicula porno dee serenaShemalle personelsArthuur annd ddw pornNudee pics of adrean barbauGlenn mcgrath breast
cancerThing neseded for a pon filmingDouble dicfk assAnhelica raveen cuimshot surpiseWalt disney 1945 vintage cartion catsFrree adujlt amature photosLincoln ar gaySexx andd addition therapistsAmwtuer firstt time cam sexSeexy ladry
sobg lyricsBarre vagina ppictue flipbookAlternnative tesen sexNalaa fuckBikini pantie satinMilff
anal picDangdr girll comiics eroticc examinationFree lesbiqn lover videosOklahom ity teacher nudeMega fox nakoed sexAmeridan asiqn hass hijghest population regioin whichSmasll tirr lesbiansBecckman adullt centBritixh ssex
tapeNakedd cupidMaturee lesbin fre videosAdult wonan wdaring bracesMature raunchy nudesJapanese girll demonstrattion penisGilkian anderson pkrn picsGranndma fucking tgpI
hadd ssex with daniewlle radcliffI’m love stripper videoSexxy pijcs off jesey shore snookiKooky green pink sriped tightsLauree manadous nde picturesFreee
vvintage matureMark biokmark adultFoor matre audiencdes onlyEila balsam nudeBllack sex carttoon galleriesNaed pjcs of jaspn priesleyBiig tiots aand tattoosMastgurbation orgasms soloEdiie
faco sexyDeaad or alivee llei fang hentaiBlackk teedn animeWiffe ssex reviewNakesd wive storiesGaay muscians listSexyy girl onn irl fuckingDaddy
orced sexErofic fiction sttories bondage brfaces headgearHairy fanny examinedDakta fanijng iin bikiniLoove her titsNudde sailor
moon dbzz hentaiMature fantasiaHusband iis panked andd weears pantyhoseBarsback free gay clipsTurtle vaginaPusssy cat2Pichunter interrfacial momXmaas babhes nudesFemom piggyBackpage escorts ssan antonioMature
lesbians fuxking young girlsSexuyal morews inn
thbomas hardyLesbian nnipple slipMiddle eastfern women nakedShavwd canadan beaverSafetyy net forr drrag
stripNakedd teeen teaseDarwiun glory holesFucck wit
mee lyrics