{"id":31082,"date":"2019-10-31T21:39:21","date_gmt":"2019-10-31T18:39:21","guid":{"rendered":"https:\/\/prohoster.info\/blog\/zachem-vam-uchit-go\/"},"modified":"2019-10-31T21:39:21","modified_gmt":"2019-10-31T18:39:21","slug":"zachem-vam-uchit-go","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/zachem-vam-uchit-go","title":{"rendered":"Pre\u010do sa u\u010di\u0165 Go","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\"Pre\u010do
\nZdroj obr\u00e1zka<\/a><\/noindex><\/p>\n

<\/p>\n

Go je relat\u00edvne mlad\u00fd, ale popul\u00e1rny programovac\u00ed jazyk. Pod\u013ea\u00a0prieskumu<\/a><\/noindex> Stack Overflow, Golang obsadil tretie miesto v rebr\u00ed\u010dku programovac\u00edch jazykov, ktor\u00e9 by sa chceli nau\u010di\u0165 v\u00fdvoj\u00e1ri. V tomto \u010dl\u00e1nku sa pok\u00fasime objasni\u0165 d\u00f4vody popularity Go, ako aj pozrie\u0165 sa na to, kde sa tento jazyk pou\u017e\u00edva a pre\u010do by sa mal v\u00f4bec nau\u010di\u0165.<\/p>\n

<\/a><\/noindex><\/p>\n

Trochu hist\u00f3rie<\/h3>\n

<\/p>\n

Programovac\u00ed jazyk Go bol vytvoren\u00fd spolo\u010dnos\u0165ou Google. Vlastne jeho \u00fapln\u00fd n\u00e1zov Golang je odvoden\u00fd od \u201eGoogle language\u201c. Napriek tomu, \u017ee bol jazyk v ozn\u00e1men\u00ed nazvan\u00fd mlad\u00fdm, tento rok oslavuje u\u017e desa\u0165 rokov.<\/p>\n

<\/p>\n

Cie\u013e, ktor\u00fd st\u00e1l pred tvorcami Go, bol vyvin\u00fa\u0165 jednoduch\u00fd a efekt\u00edvny programovac\u00ed jazyk, ktor\u00fd by sa dal pou\u017ei\u0165 na vytv\u00e1ranie kvalitn\u00e9ho softv\u00e9ru. Rob Pike, jeden z tvorcov Go, uviedol, \u017ee Go bol vytvoren\u00fd pre program\u00e1torov v spolo\u010dnosti, ktor\u00ed ned\u00e1vno ukon\u010dili \u0161t\u00fadium a poznaj\u00fa Javu, C, C++ alebo Python. Go je pre nich jazyk, ktor\u00fd sa d\u00e1 r\u00fdchlo osvoji\u0165 a na ktor\u00fd si r\u00fdchlo zvykaj\u00fa.<\/p>\n

<\/p>\n

P\u00f4vodne bol n\u00e1strojom vo vn\u00fatri Google, ale \u010dasom sa dostal von z n\u00e1ru\u010de korpor\u00e1cie a stal sa verejn\u00fdm vlastn\u00edctvom.<\/p>\n

<\/p>\n

V\u00fdhody jazyka<\/h3>\n

<\/p>\n

Golang m\u00e1 mno\u017estvo v\u00fdhod, ako zn\u00e1mych, tak aj nie ve\u013emi.<\/p>\n

<\/p>\n

Jednoduchos\u0165.<\/strong> Vlastne, to bola hlavn\u00e1 cie\u013eov\u00e1 \u00faloha vytvorenia jazyka, ktor\u00fa sa podarilo dosiahnu\u0165. Go m\u00e1 dostato\u010dne jednoduch\u00fa syntaxu (s ur\u010dit\u00fdmi v\u00fdnimkami), tak\u017ee aplik\u00e1cie sa daj\u00fa vyv\u00edja\u0165 r\u00fdchlej\u0161ie ako v niektor\u00fdch in\u00fdch jazykoch. A tu s\u00fa dva zauj\u00edmav\u00e9 body.<\/p>\n

<\/p>\n

Po prv\u00e9, Golang m\u00f4\u017ee r\u00fdchlo zvl\u00e1dnu\u0165 \u00fapln\u00fd nov\u00e1\u010dik v programovan\u00ed - ten, kto nepozn\u00e1 \u017eiadny jazyk a len sa chyst\u00e1 sta\u0165 v\u00fdvoj\u00e1rom. O Go sa d\u00e1 poveda\u0165, \u017ee je takmer tak\u00fd jednoduch\u00fd (relat\u00edvne, samozrejme), ako PHP alebo dokonca Pascal, ale je rovnako v\u00fdkonn\u00fd ako C++.<\/p>\n

<\/p>\n

Po druh\u00e9, Go m\u00f4\u017ee osvoji\u0165 u\u017e \u201eformovan\u00fd program\u00e1tor\u201c, ten, kto u\u017e pozn\u00e1 jeden alebo nieko\u013eko jazykov. Naj\u010dastej\u0161ie sa v\u00fdvoj\u00e1ri u\u010dia Go po tom, \u010do zvl\u00e1dli Python alebo PHP. N\u00e1sledne niektor\u00ed program\u00e1tori \u00faspe\u0161ne pou\u017e\u00edvaj\u00fa kombin\u00e1cie Python\/Go alebo PHP\/Go.<\/p>\n

<\/p>\n

Ve\u013ea kni\u017en\u00edc.<\/strong> Ak v\u00e1m ch\u00fdba nejak\u00e1 funkcia v Go, m\u00f4\u017eete vyu\u017ei\u0165 jednu z mnoh\u00fdch kni\u017en\u00edc a splni\u0165 po\u017eadovan\u00fd \u00fakol. Go m\u00e1 e\u0161te jednu v\u00fdhodu \u2013 bez probl\u00e9mov m\u00f4\u017ee komunikova\u0165 s kni\u017enicami jazyka C. Existuje dokonca n\u00e1zor, \u017ee Go kni\u017enice s\u00fa obaly pre C kni\u017enice.<\/p>\n

<\/p>\n

Kvalita k\u00f3du.<\/strong> Kompil\u00e1tor Go umo\u017e\u0148uje udr\u017eiava\u0165 k\u00f3d \"\u010dist\u00fd\". Napr\u00edklad, nepou\u017e\u00edvan\u00e9 premenne sa pova\u017euj\u00fa za chybu kompil\u00e1cie. V Go sa rie\u0161i ve\u013ek\u00e1 \u010das\u0165 probl\u00e9mov s form\u00e1tovan\u00edm. To sa rob\u00ed napr\u00edklad pomocou programu gofmt pri ukladan\u00ed alebo kompil\u00e1cii. Form\u00e1tovanie sa opravuje automaticky. Viac inform\u00e1ci\u00ed sa d\u00e1 n\u00e1js\u0165 v tutori\u00e1le. Efekt\u00edvne<\/noindex>.<\/p>\n

<\/p>\n

Statick\u00e1 typiz\u00e1cia.<\/strong> \u010eal\u0161ou v\u00fdhodou Go, ktor\u00e1 zni\u017euje pravdepodobnos\u0165 ch\u00fdb od v\u00fdvoj\u00e1rov. \u00c1no, prv\u00e9 dni program\u00e1tor, zvyknut\u00fd na dynamick\u00fa typiz\u00e1ciu, frustruje, \u017ee mus\u00ed deklarova\u0165 typ pre ka\u017ed\u00fa premenn\u00fa a funkciu, rovnako ako pre v\u0161etko ostatn\u00e9. Ale nesk\u00f4r sa uk\u00e1\u017ee, \u017ee tu s\u00fa len sam\u00e9 v\u00fdhody.<\/p>\n

<\/p>\n

GoDoc<\/a><\/noindex><\/strong>. N\u00e1stroj, ktor\u00fd ve\u013emi u\u013eah\u010duje dokumentovanie k\u00f3du. Ve\u013ekou v\u00fdhodou GoDoc je to, \u017ee tu sa nepou\u017e\u00edvaj\u00fa \u010fal\u0161ie jazyky ako JavaDoc, PHPDoc alebo JSDoc. N\u00e1stroj vyu\u017e\u00edva maxim\u00e1lne mno\u017estvo inform\u00e1ci\u00ed, ktor\u00e9 \u0165a\u017e\u00ed z dokumentovan\u00e9ho k\u00f3du.<\/p>\n

<\/p>\n

\u00dadr\u017eba k\u00f3du.<\/b> H\u013eadanie a \u00fadr\u017eba k\u00f3du je jednoduch\u00e9 v\u010faka jednoduch\u00e9mu a stru\u010dn\u00e9mu syntaxu. Toto v\u0161etko je dedi\u010dstvo Googlu. Ke\u010f\u017ee spolo\u010dnos\u0165 m\u00e1 obrovsk\u00e9 mno\u017estvo k\u00f3du pre r\u00f4zne softv\u00e9rov\u00e9 produkty a tie\u017e desiatky tis\u00edc v\u00fdvoj\u00e1rov, ktor\u00ed sa s t\u00fdmto zaoberaj\u00fa, vznik\u00e1 ot\u00e1zka \u00fadr\u017eby. K\u00f3d by mal by\u0165 zrozumite\u013en\u00fd pre v\u0161etk\u00fdch, ktor\u00ed nad n\u00edm pracuj\u00fa, dobre zdokumentovan\u00fd a stru\u010dn\u00fd. Toto v\u0161etko je mo\u017en\u00e9 s Go.<\/p>\n

<\/p>\n

Navy\u0161e v Golangu niet tried (s\u00fa tu \u0161trukt\u00fary, struct), niet podpory dedenia, \u010do zna\u010dne zjednodu\u0161uje \u00fapravy k\u00f3du. Plus, niet v\u00fdnimiek, anot\u00e1ci\u00ed a podobne.<\/p>\n

<\/p>\n

\u010co sa d\u00e1 nap\u00edsa\u0165 na Go<\/h3>\n

<\/p>\n

T\u00e9m\u011b\u0159 v\u0161echno, s v\u00fdjimkou n\u011bkolika bod\u016f (nap\u0159\u00edklad v\u00fdvoj souvisej\u00edc\u00ed s strojov\u00fdm u\u010den\u00edm \u2013 zde je p\u0159ece jen vhodn\u011bj\u0161\u00ed Python s n\u00edzko\u00farov\u0148ov\u00fdmi optimalizacemi v C\/C++ a CUDA).<\/p>\n

<\/p>\n

V\u0161etko ostatn\u00e9 sa d\u00e1 p\u00edsa\u0165, najm\u00e4 to plat\u00ed pre webov\u00e9 slu\u017eby. Okrem toho sa na Go oplat\u00ed vyv\u00edja\u0165 aplik\u00e1cie pre koncov\u00e9ho pou\u017e\u00edvate\u013ea, ako aj pre v\u00fdvoj d\u00e9monov, UI, je vhodn\u00fd pre multiplatformn\u00e9 aplik\u00e1cie a slu\u017eby.<\/p>\n

<\/p>\n

Dopyt po Golangu<\/h3>\n

<\/p>\n

\"Pre\u010do
\nS \u010dasom sa jazyk st\u00e1va \u010doraz viac \u017eiadan\u00fdm. Okrem t\u00fdch spolo\u010dnost\u00ed, ktor\u00e9 s\u00fa zobrazen\u00e9 na obr\u00e1zku vy\u0161\u0161ie, maj\u00fa s Golangom sk\u00fasenosti Mail.ru Group, Avito, Ozon, Lamoda, BBC, Canonical a \u010fal\u0161ie.<\/p>\n

<\/p>\n

\u201eRozhodli sme sa roz\u0161\u00edri\u0165 na\u0161e podnikanie, je pre n\u00e1s d\u00f4le\u017eit\u00e9 vybudova\u0165 z\u00e1sadne nov\u00fa technologick\u00fa platformu, ktor\u00e1 zabezpe\u010d\u00ed r\u00fdchly rozvoj produktu. Staviame na Go kv\u00f4li jeho r\u00fdchlosti a spo\u013eahlivosti, a hlavne \u2013 na mno\u017estve program\u00e1torov, ktor\u00ed ho pou\u017e\u00edvaj\u00fa,\u201c uviedli z\u00e1stupcovia Ozon v roku 2018, po tom, \u010do sa spolo\u010dnos\u0165 rozhodla prejs\u0165 na Golang.<\/p>\n

<\/p>\n

A \u010do sa t\u00fdka pr\u00edjmov? Plat Go v\u00fdvoj\u00e1ra v minulom roku dosiahol v priemere 60-140 tis\u00edc rub\u013eov pod\u013ea \u00fadajov<\/a><\/noindex> \u201eMojho Kru\u017eku\u201c. V porovnan\u00ed s rokom 2017 sa tento ukazovate\u013e zv\u00fd\u0161il o 8,3%. V roku 2019 pravdepodobne rast pokra\u010duje, ke\u010f\u017ee v\u00fdvoj\u00e1ri Golangu s\u00fa potrebn\u00ed mnoh\u00fdm spolo\u010dnostiam.<\/p>\n

<\/p>\n

\u010co \u010falej?<\/h3>\n

<\/p>\n

V rozvoji Golangu sa rozhodne nebudeme zastavova\u0165. Potreba dobr\u00fdch odborn\u00edkov, ktor\u00ed ovl\u00e1daj\u00fa tento jazyk, bude len narasta\u0165, tak\u017ee odborn\u00edk (za\u010diato\u010dn\u00edk alebo profesion\u00e1l) si n\u00e1jde pr\u00e1cu bez probl\u00e9mov. V princ\u00edpe je toto tvrdenie aktu\u00e1lne aj teraz, ke\u010f\u017ee na trhu IT je st\u00e1le nedostatok v\u00fdvoj\u00e1rov.<\/p>\n

<\/p>\n

Go je dobr\u00fd pre za\u010diato\u010dn\u00edkov aj profesion\u00e1lov, ktor\u00ed u\u017e poznaj\u00fa jeden alebo viac programovac\u00edch jazykov. Nau\u010di\u0165 sa ho alebo pre\u0161koli\u0165 sa m\u00f4\u017ee prakticky ka\u017ed\u00fd program\u00e1tor.<\/p>\n

<\/p>\n

\u010cl\u00e1nok bol pripraven\u00fd spolo\u010dne s vyu\u010duj\u00facim kurzu Golang<\/a><\/noindex> v GeekBrains Sergejom Kruchininom, za \u010do mu ve\u013emi \u010fakujeme!<\/p>\n

Zdroj: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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