<\/a><\/noindex>Navzdory v\u00fdtk\u00e1m sv\u00e9ho syna a vnuka za z\u00e1libu v t\u0159\u00edd\u00e1ch, s\u00e1m d\u011bde\u010dek C u\u017e d\u00e1vno a d\u016fkladn\u011b sed\u011bl na ukazatel\u00edch. Naz\u00fdval to \u201earitmetika ukazatel\u016f\u201c a prohla\u0161oval, \u017ee to v\u0161e je sou\u010d\u00e1st\u00ed jeho filozofie, kter\u00e1 mu umo\u017e\u0148uje b\u00fdt bl\u00ed\u017ee podstat\u011b v\u011bc\u00ed kolem n\u011bj. V posledn\u00ed dob\u011b se z\u0159\u00eddka objevoval mezi lidmi. N\u011bkte\u0159\u00ed dokonce tvrdili, \u017ee star\u00fd mu\u017e u\u017e d\u00e1vno zem\u0159el, ale ob\u010das byly po noc\u00edch vid\u011bt jeho stopy. Tam je rozbit\u00fd lampion, tam je kolemjdouc\u00ed post\u0159elen do nohy, tam je p\u0159ete\u010den\u00ed bufferu... <\/p>\n
S str\u00fdcem Classical C a bratrancem C-99..11 se C++ v\u00eddal \u010dasto. Cel\u00e1 rodina se vz\u00e1jemn\u011b moc nemilovala. Ale spole\u010dn\u00e9 pr\u00e1ce a bydlen\u00ed je nutily dodr\u017eovat jejich API dohody. Br\u00e1\u0161ka C a jeho otec uji\u0161\u0165ovali, \u017ee pr\u00e1v\u011b oni nejrychleji st\u0159\u00edlej\u00ed do nohou kolemjdouc\u00edm, na rozd\u00edl od r\u016fzn\u00fdch milovn\u00edk\u016f t\u0159\u00edd. C++ s t\u00edm nesouhlasil. A\u010dkoliv \u0159\u00edkal, \u017ee nen\u00ed \u0161patn\u00fd st\u0159elec, uvnit\u0159 v\u011bd\u011bl, \u017ee u\u017e\u00edv\u00e1n\u00ed takov\u00fdch v\u011bc\u00ed jako OOP nen\u00ed bez n\u00e1sledk\u016f. Neust\u00e1le ho pron\u00e1sledoval komplex m\u00e9n\u011bcennosti. Aby se ho zbavil, za\u010dal se \u00fa\u010dastnit benchmark\u016f. N\u011bkdy p\u0159ed p\u0159eb\u00edjen\u00edm brokovnice C++ zpomalil a ostatn\u00ed \u010dlenov\u00e9 rodiny si soucitn\u011b vym\u011bnili pohledy, a pak se sm\u00e1li za jeho z\u00e1dy.<\/p>\n
Jeho p\u0159\u00edbuzn\u00ed je\u0161t\u011b netu\u0161ili, \u017ee C++ p\u016fjde d\u00e1l ne\u017e jeho zesnul\u00fd otec. Krom\u011b OOP se za\u010dal zaj\u00edmat o \u0161ablony. Po dlouh\u00e9m pou\u017e\u00edv\u00e1n\u00ed \u0161ablon si uv\u011bdomil, \u017ee v jak\u00e9koliv sout\u011b\u017ei ve st\u0159elb\u011b m\u016f\u017eete vyhr\u00e1t, kdy\u017e prost\u0159el\u00edte nohu rozhod\u010d\u00edmu je\u0161t\u011b p\u0159ed startem. C++ byl jednomysln\u011b uzn\u00e1n \u0161ampionem metaprogramov\u00e1n\u00ed a na sout\u011b\u017ee ho v\u00edc nepou\u0161t\u011bli. Ale to ho nezastavilo. Za\u010dal se objevovat v diskusn\u00edch klubech m\u00edstn\u00edch intelektu\u00e1l\u016f a filozof\u016f a po\u017eadoval uzn\u00e1n\u00ed sebe jako funk\u010dn\u00edho Jazyka programov\u00e1n\u00ed. Haskell a Lisp v hr\u016fze prchali p\u0159ed t\u00edmto ozbrojen\u00fdm chlap\u00edkem se sm\u011b\u0161nou statickou typizac\u00ed. Ale nikam se ne\u0161li schovat, s t\u00edm, kdo m\u00edch\u00e1 OOP se \u0161ablonami a r\u00e1d st\u0159\u00edl\u00ed do nohou, se t\u011b\u017eko diskutuje. Tak se n\u00e1\u0161 hrdina stal multiparadigmatick\u00fdm.<\/p>\n
Ale C++u dlouho netrvalo, aby z\u016fstal na vrcholu sl\u00e1vy nejlep\u0161\u00edho st\u0159elce ve m\u011bst\u011b. Postupem \u010dasu p\u0159estalo b\u00fdt OOP p\u0159edm\u011btem posm\u011bchu a na brbl\u00e1n\u00ed star\u00fdch se u\u017e nikdo ned\u00edval. To se stalo dokonce m\u00f3dn\u00edm. Mnoz\u00ed si ob\u010das r\u00e1di \u201e\u0161lehli\u201c s t\u0159\u00eddami\u2026 a nov\u00e9 generace vyrostly \u00fapln\u011b jin\u00e9\u2026 <\/p>\n
Java se jako prvn\u00ed proslavil. Odm\u00edtal nutnost rychl\u00e9 st\u0159elby do nohou a uji\u0161\u0165oval, \u017ee hlavn\u00ed hodnotou je jasnost\u2026 a objekty\u2026 nic ne\u017e objekty. Pravdou v\u0161ak je, \u017ee pletl objekty s t\u0159\u00eddami, p\u0159id\u00e1vaje do tohoto koktejlu primitiva, co\u017e mu nebr\u00e1nilo v tom, aby se prezentoval jako \u201ePrvn\u00ed pln\u011b objektov\u011b orientovan\u00fd\u201c. \u0158\u00edkalo se, \u017ee Java je nelegitimn\u00ed d\u00edt\u011b D\u011bde\u010dka C z nezn\u00e1m\u00e9 OOP d\u00e1my. N\u011bkdo tvrdil, \u017ee tu m\u00e1 prsty sp\u00ed\u0161e C++. Jak to bylo doopravdy, nen\u00ed zn\u00e1mo, ale Java vyrostla v \u00fatulku korporace Oracle. Aby nov\u00fd jazyk nenap\u00e1chal p\u0159\u00edli\u0161n\u00e9 \u0161kody a nevydal se na cestu st\u0159elby do nohou, in\u017een\u00fd\u0159i Oracle mu v \u00fatulku provedli lobotomii a u\u0159\u00edzli mu ukazov\u00e1\u010dky. Kdy\u017e si mal\u00fd trochu povyrostl, starostliv\u00ed opatrovn\u00edci ho ani na krok nepustili do sv\u011bta dosp\u011blosti, ukazatele pe\u010dliv\u011b skr\u00fdvaj\u00edc hluboko uvnit\u0159 virtu\u00e1ln\u00edho stroje. Nav\u00edc byl Java pe\u010dliv\u011b nau\u010den, \u017ee st\u0159\u00edlet do kohokoli je \u0161patn\u00e9, a \u017ee zbran\u011b by se m\u011bly \u00fapln\u011b zak\u00e1zat. Tato bl\u00edzk\u00e1 zku\u0161enost s komunismem od ran\u00e9ho d\u011btstv\u00ed m\u011bla na Javu pozitivn\u00ed vliv a rychle z\u00edskal v\u0161echny \u010destn\u00e9 pozice v podnikov\u00e9 v\u00fdvoji. Zd\u00e1lo se, \u017ee jsou za n\u00e1mi \u010dasy bezkontroln\u00ed anarchie, nastal v\u011bk koordinovan\u00e9ho t\u00fdmov\u00e9ho v\u00fdvoje a st\u0159\u00edlet sousedovi do nohy se stalo \u0161patn\u00fdm t\u00f3nem.<\/p>\n
Odstr\u010den\u00fd na druhou kolej, C++ se pokusil vzchopit a dr\u017eet krok s dobou, p\u0159ipev\u0148uj\u00edc\u00ed laserov\u00fd zam\u011b\u0159ova\u010d k p\u0159edpa\u017eb\u00ed brokovnice a sna\u017ee se dodat ukazatel\u016fm inteligenci. Pomohlo to sice moc nezda\u0159ilo, tak\u017ee byl zapomenut mnoha a oddal se bezv\u011bdom\u00e9mu alkoholismu a dlouh\u00e9mu sp\u00e1nku. <\/p>\n
A za oknem Java u\u017e vedlo bitvu s nov\u00fdm mocn\u00fdm protivn\u00edkem. C# byl v\u00fdsledkem genetick\u00e9ho m\u00edch\u00e1n\u00ed C++ a Java. Po\u0159\u00e1d koluj\u00ed spekulace, \u017ee geny Java byly z\u00edsk\u00e1ny pro tento experiment pon\u011bkud nepoctiv\u00fdm zp\u016fsobem, v t\u00e9 dob\u011b se dokonce strhla mal\u00e1 af\u00e9ra. Ale C#, kter\u00fd byl vytvo\u0159en in\u017een\u00fdry jin\u00e9 mocn\u00e9 korporace a byl skute\u010dn\u011b pln\u011b objektov\u011b orientovan\u00fd, zd\u011bdil mnoh\u00e9 vlastnosti C++, aby mohl \u010delit Java a dok\u00e1zal si vybojovat sv\u00e9 m\u00edsto v drsn\u00e9m sv\u011bt\u011b podnik\u00e1n\u00ed. Aby mohl porazit Java, jeho tv\u016frci mu sv\u011b\u0159ili \u0161ablony, OOP a ukazatele (i kdy\u017e mu radili, aby je pou\u017e\u00edval opatrn\u011b).<\/p>\n
Mlad\u00fd padawan vstoupil do boje s lobotomizovan\u00fdm invalidou a do roku 2020 ho t\u00e9m\u011b\u0159 p\u0159ev\u00e1lcoval...<\/p>\n
\u010cas se nezastavil a p\u0159irozen\u00e9 rozmno\u017eov\u00e1n\u00ed vy\u0161lo z m\u00f3dy. Te\u010f se pova\u017eovalo za to, \u017ee pokud nejsi stvo\u0159en v laborato\u0159i n\u011bjak\u00e9 korporace, nikdy nedos\u00e1hne\u0161 \u00fasp\u011bchu. Tak se objevili JavaScript, Go, Rust a mnoz\u00ed dal\u0161\u00ed. O \u017eivotopisu prvn\u00edho se mi tu styd\u00ed mluvit, omez\u00edm se na to, \u017ee \u010dten\u00e1\u0159 by m\u011bl v\u011bd\u011bt, \u017ee se narodil jako slep\u011b hluch\u00fd \u0161\u00edlenec, ale d\u00edky l\u00e1sce n\u011bkter\u00fdch lid\u00ed dok\u00e1zal p\u0159ekonat v\u0161echny tyto nedostatky a st\u00e1t se transgendrov\u00fdm homosexu\u00e1lem. St\u0159\u00edlet neum\u011bl, ale skv\u011ble dok\u00e1zal p\u0159in\u00e9st minutku pozitivn\u00edho zpomalen\u00ed do jak\u00e9koli \u010dinnosti, kamkoli ho vzali. Kdy\u017e JS vyrostl, uv\u011bdomil si sv\u00e9 posl\u00e1n\u00ed design\u00e9ra barevn\u00fdch tla\u010d\u00edtek a plak\u00e1t\u016f. Od t\u00e9 doby se venku za\u010dalo stra\u0161it, hromady kysel\u00fdch banner\u016f a p\u00edskaj\u00edc\u00edch tla\u010d\u00edtek zaplavily v\u0161e kolem. Kdy\u017e mu star\u0161\u00ed pracovn\u00edci d\u00e1vali pozn\u00e1mky k tomu, JS za\u010dal hlasit\u011b k\u0159i\u010det, \u017ee ho op\u011bt utla\u010duj\u00ed zl\u00ed heterosexu\u00e1lov\u00e9. Ale to je jen \u010d\u00e1st v\u0161ech nesn\u00e1z\u00ed. JS p\u0159ivedl do sv\u011bta v\u00fdvoje sv\u00e9 p\u0159\u00e1tele. Zeleno-bradat\u00e9, s barevn\u00fdmi vlasy, na sk\u00fatrech\u2026 On s\u00e1m st\u00e1le zab\u00edral ve\u0161ker\u00fd dostupn\u00fd prostor a pam\u011b\u0165, a to v podm\u00ednk\u00e1ch XXI. stolet\u00ed, kdy se zd\u00e1lo, \u017ee by j\u00ed m\u011blo b\u00fdt dost pro v\u0161echny! <\/p>\n
Ale ani zde se dosud nikomu nepoda\u0159ilo ho obvinit. JS na to za\u010dal vypr\u00e1v\u011bt, \u017ee v\u0161ichni by se m\u011bli st\u00e1t body pozitivn\u00edmi a rovn\u00fdmi a nez\u00e1le\u017e\u00ed na tom, kolik pam\u011bti spot\u0159ebov\u00e1v\u00e1te a kolik m\u00edsta zab\u00edr\u00e1te. \u201eV\u0161ichni zam\u011bstnanci jsou cenn\u00ed, v\u0161ichni zam\u011bstnanci jsou d\u016fle\u017eit\u00ed, v\u0161ichni zam\u011bstnanci jsou rovn\u00ed,\u201c \u0159\u00edkal JS. Dal\u0161\u00ed zaj\u00edmavou ud\u00e1lost\u00ed spojenou s JS je, \u017ee sn\u00ed\u017eil jak\u00fdsi \u201evstupn\u00ed pr\u00e1h\u201c na nulu. \u0158\u00edk\u00e1 se, \u017ee po tomto ne\u0161t\u011bst\u00ed se D\u011bde\u010dek C ob\u011bsil ve sv\u00e9 komo\u0159e o velikosti 5x5 kilobajt\u016f. P\u0159esto je JS st\u00e1le na svobod\u011b, tak\u017ee varujeme, bu\u010fte opatrn\u00ed!<\/p>\n
Tv\u016frci Go se rozhodli p\u0159ekonat tv\u016frce Javy. Sv\u00e9mu d\u00edt\u011bti je\u0161t\u011b v d\u011bloze vym\u011bnili \u010d\u00e1st \u0159et\u011bzc\u016f DNA za hra\u010dky\u2026 A pak od\u0159\u00edzli nejen prsty, ale i u\u0161i spolu s nosem, pod z\u00e1minkou, \u017ee individu\u00e1ln\u00ed rysy nejsou pot\u0159eba, a \u017ee si v\u0161ichni maj\u00ed b\u00fdt podobn\u00ed, aby se nezam\u011b\u0148ovali svou individualitou. M\u00f3da OOP p\u0159e\u0161la a Go nedostal ani t\u0159\u00eddy, ani \u0161ablony. Zato dostal gorutiny. T\u00edm \u017eije dodnes, podporuj\u00edc\u00ed r\u016fzn\u00e9 utilitky. <\/p>\n
Dlouho n\u011bkte\u0159\u00ed nad\u0161enci meditovali nad p\u0159\u00edrodou prob\u00edhaj\u00edc\u00ed vakchan\u00e1lie, a\u017e je osv\u00edcen\u00ed dostihlo. Pot\u00e9 vytvo\u0159ili ucelen\u00fd n\u00e1bo\u017eensko-filosofick\u00fd syst\u00e9m, nazvali ho konceptem vlastnictv\u00ed a zplodili Rust. Rust se vyzna\u010doval svou principielnost\u00ed a v\u011brnost\u00ed z\u00e1sad\u00e1m polo\u017een\u00fdm od d\u011btstv\u00ed. Kdy\u017e mu bylo n\u011bco zad\u00e1no, nevykonal to, dokud se neujistil, \u017ee nikomu neubl\u00ed\u017e\u00ed. Ale abych dal pokyn Rustu, musel jsem pochopit koncept vlastnictv\u00ed a borrow checker. \u0158\u00edk\u00e1 se, \u017ee po tom se prahem vstupu zv\u00fd\u0161il o 15,37 %.<\/p>\n
Zat\u00edmco nov\u00e9 jazyky rostly jako houby po de\u0161ti, ty star\u00e9 s\u00edlily. Java dostala prot\u00e9zy v podob\u011b generik a lambda v\u00fdraz\u016f, kter\u00e9 si p\u016fj\u010dila z filozofick\u00e9ho klubu profesora Haskella. Podobn\u00e9 lambda v\u00fdrazy si na\u0161el i C#, a nav\u00edc objevil l\u00e1sku jm\u00e9nem Linq. Java nez\u016fst\u00e1vala pozadu a zalo\u017eila si Stream API. Ale C# u\u010dinil ne\u010dekan\u00fd tah, kdy\u017e p\u0159inesl vrhac\u00ed no\u017ee async\/await a zbavil se t\u011b\u017ek\u00e9ho b\u0159emene null. Java, p\u0159i z\u00e1vodu za sv\u00fdm mlad\u0161\u00edm rivalem, se za\u010dala podobat transform\u00e1toru slo\u017een\u00e9mu z r\u016fzn\u00fdch blok\u016f r\u016fzn\u00fdch materi\u00e1l\u016f. N\u011bco se odlepilo. V tomto stavu sv\u011bt n\u00e1hle objevil C++. Ten rychle vytvo\u0159il sv\u00e9 lambda v\u00fdrazy a sv\u016fj automatick\u00fd typov\u00fd syst\u00e9m. Te\u010f u\u017e C# a Java v hr\u016fze ustoupily p\u0159ed touto pod\u00edvanou. S laserov\u00fdm zam\u011b\u0159ova\u010dem p\u0159ipevn\u011bn\u00fdm modrou izola\u010dn\u00ed p\u00e1skou k brokovnici, v oran\u017eov\u00e9 k\u0161iltovce s \u010dern\u00fdmi br\u00fdlemi a s sekerou vis\u00edc\u00ed na popruhu, C++ skute\u010dn\u011b vnucoval hr\u016fzu v\u0161em, kdo se na n\u011bj d\u00edvali. N\u011bkte\u0159\u00ed si ze star\u00e9 pam\u011bti instinktivn\u011b chytali kolena\u2026<\/p>\n
P\u0159eji v\u0161em hezk\u00fd den. Pokud se to l\u00edb\u00ed, nap\u00ed\u0161u pokra\u010dov\u00e1n\u00ed o pracuj\u00edc\u00ed v v\u011bdecko-filosofick\u00e9m pr\u016fmyslu.habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"\u0418\u0437\u0434\u0430\u0442\u0435\u043b\u044c\u0441\u0442\u0432\u043e \u00ab\u0411\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u0447\u043a\u0430 \u043f\u0440\u043e\u043b\u0435\u0442\u0430\u0440\u0438\u044f\u00bb. \u0412 \u044d\u0442\u043e\u043c \u0440\u043e\u043c\u0430\u043d\u0435 \u0430\u0432\u0442\u043e\u0440 \u0440\u0430\u0441\u0441\u043a\u0430\u0436\u0435\u0442 \u043d\u0430\u043c \u043e \u043d\u0435\u043b\u0435\u0433\u043a\u043e\u0439 \u0441\u0443\u0434\u044c\u0431\u0435 \u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0440\u0430\u0431\u043e\u0447\u0435\u0433\u043e \u043a\u043b\u0430\u0441\u0441\u0430 \u0438\u043d\u0434\u0443\u0441\u0442\u0440\u0438\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438. \u041e \u043f\u043e\u0447\u0435\u0442\u043d\u044b\u0445 \u0440\u0430\u0431\u043e\u0442\u043d\u0438\u043a\u0430\u0445 \u0438 \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0438 \u043b\u0438\u0447\u043d\u044b\u0445 \u0432\u0437\u0430\u0438\u043c\u043e\u043e\u0442\u043d\u043e\u0448\u0435\u043d\u0438\u0439 \u0432 \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u0445 \u043d\u0435\u0445\u0432\u0430\u0442\u043a\u0438 \u043f\u0430\u043c\u044f\u0442\u0438. \u0420\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u044e. \/*\u041a\u0440\u0438\u0442\u0438\u043a*\/ \u0412\u0441\u0435 \u0441\u043e\u0432\u043f\u0430\u0434\u0435\u043d\u0438\u044f \u043d\u0435 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u044b. \u0423 C++ \u0441\u043b\u043e\u0436\u043d\u044b\u0439 \u0445\u0430\u0440\u0430\u043a\u0442\u0435\u0440 \u0438\u0437-\u0437\u0430 \u0442\u044f\u0436\u0435\u043b\u043e\u0433\u043e \u0434\u0435\u0442\u0441\u0442\u0432\u0430. \u041e\u043d \u0440\u043e\u0441 \u0432 \u0433\u043e\u043b\u043e\u0434\u043d\u044b\u0435 80\u0435, \u0438 \u043f\u043e\u043c\u043d\u0438\u0442 \u043a\u0430\u043a \u0447\u0430\u0441\u0442\u043e \u043c\u0435\u0441\u0442\u0430 \u043d\u0435 \u0445\u0432\u0430\u0442\u0430\u043b\u043e \u0434\u0430\u0436\u0435 \u043d\u0430 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-55941","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t