{"id":349,"date":"2015-06-25T12:28:18","date_gmt":"2015-06-25T11:28:18","guid":{"rendered":"http:\/\/hudecekpetr.cz\/?p=349"},"modified":"2015-06-25T18:15:11","modified_gmt":"2015-06-25T17:15:11","slug":"hlasky-ucitelu-mff-principy-pocitacu","status":"publish","type":"post","link":"https:\/\/hudecekpetr.cz\/cs\/hlasky-ucitelu-mff-principy-pocitacu\/","title":{"rendered":"Hl\u00e1\u0161ky u\u010ditel\u016f MFF"},"content":{"rendered":"<p><center><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-150\" src=\"http:\/\/hudecekpetr.cz\/wp-content\/uploads\/2015\/01\/CzechPost.png\" alt=\"This blog post is available in Czech only.\" width=\"500\" height=\"100\" srcset=\"https:\/\/hudecekpetr.cz\/wp-content\/uploads\/2015\/01\/CzechPost.png 500w, https:\/\/hudecekpetr.cz\/wp-content\/uploads\/2015\/01\/CzechPost-300x60.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/center>V\u0161echny n\u00e1sleduj\u00edc\u00ed hl\u00e1\u0161ky poch\u00e1z\u00ed od u\u010ditel\u016f na MFF b\u011bhem m\u00e9ho bakal\u00e1\u0159sk\u00e9ho studia:<\/p>\n<ul>\n<li><strong>Pokro\u010dil\u00e9 programov\u00e1n\u00ed pro .NET 1<\/strong>\n<ul>\n<li>\u201eMetoda IgnoreNonSpace neignoruje nemezery, jak by se mohlo zd\u00e1t, ale ve skute\u010dnosti znamen\u00e1 Ignore Non-Space Combining Characters.\u201c<\/li>\n<li>\u201eV\u00edcevl\u00e1knov\u00e9 programov\u00e1n\u00ed je t\u011b\u017ek\u00e9. To je v\u011bc, kterou je t\u0159eba si uv\u011bdomit.\u201c<\/li>\n<li>\u201eJedna varianta je, \u017ee jsou dv\u011b varianty vytv\u00e1\u0159en\u00ed vl\u00e1kna.\u201c<\/li>\n<li>\u201eNejjednodu\u0161\u0161\u00ed, ale my se \u0159ekneme, \u017ee je to trochu slo\u017eit\u011bj\u0161\u00ed, je kl\u00ed\u010dov\u00e9 slovo lock.\u201c<\/li>\n<li>\u201eV\u00edcevl\u00e1knov\u00e9 programov\u00e1n\u00ed je velmi, velmi, velmi n\u00e1ro\u010dn\u00e9.\u201c<\/li>\n<li>\u201eWindows podporuj\u00ed dual-sockety od verze Windows Vista. Mysl\u00edm, \u017ee na Windows XP je\u0161t\u011b nejsou. Tak\u017ee pokud byste cht\u011bli posledn\u00edch <em>(pod\u00edv\u00e1 se na hodinky)<\/em> 60 minut podporovat na Windows XP, tak m\u00e1te sm\u016flu.\u201c <em>(Microsoft ukon\u010dil ten den podporu Windows XP.)<\/em><\/li>\n<\/ul>\n<\/li>\n<li><strong>Pokro\u010dil\u00e9 programov\u00e1n\u00ed pro .NET 2<\/strong>\n<ul>\n<li><i>\u201c<\/i>Na adrese<a href=\"http:\/\/d3s.mff.cuni.cz\/~jezek\"> http:\/\/d3s.mff.cuni.cz\/~jezek<\/a> se v brzk\u00e9 dob\u011b objev\u00ed informace o tomto p\u0159edm\u011btu.\u201d <em>(toto je humorn\u00e9 proto, \u017ee pan Je\u017eek je zn\u00e1m\u00fd t\u00edm, s jak\u00fdm zpo\u017ed\u011bn\u00edm uve\u0159ej\u0148uje informace; konkr\u00e9tn\u011b tyto informace se objevily a\u017e b\u011bhem zkou\u0161kov\u00e9ho obdob\u00ed)<\/em><\/li>\n<li>&#8222;M\u011b to teda nep\u0159ekvapilo, ale n\u011bkoho p\u0159ekvapilo, \u017ee se ukazuje, \u017ee v HTML5 a Javascriptu nikdo neprogramuje, kdy\u017e m\u016f\u017ee programovat v C#.&#8220;<\/li>\n<li>&#8222;Metro je takov\u00e9 to divn\u00e9, takov\u00e9 to tohleto, jak se v tom ned\u00e1 v\u016fbec nic d\u011blat.&#8220;<\/li>\n<li>&#8222;Je n\u011bkolik hlavn\u00edch datab\u00e1zov\u00fdch server\u016f, nap\u0159. MS SQL Server 2012. Jeho nejv\u011bt\u0161\u00ed verze je placen\u00e1, celkem dost netrivi\u00e1ln\u011b placen\u00e1.&#8220;<\/li>\n<li>&#8222;Nev\u00edm, jakou m\u00e1 v\u00fdhodu datab\u00e1zov\u00fd server Oracle, krom\u011b toho, \u017ee b\u011b\u017e\u00ed i na newindowsech, co\u017e m\u016f\u017ee b\u00fdt pro n\u011bkoho v\u00fdhoda.&#8220;<\/li>\n<\/ul>\n<\/li>\n<li><strong>Kombinatorika a grafy<\/strong>\n<ul>\n<li>\u201cBirkhoffova v\u011bta se tak\u00e9 d\u00e1 zapsat tak, \u017ee A lze z\u00edskat jako konvexn\u00ed kombinaci permuta\u010dn\u00edch matic, co\u017e je asi zaj\u00edmav\u00e9 pro ty z v\u00e1s, kdo v\u00ed, co je to konvexn\u00ed kombinace.\u201d<\/li>\n<li>\u201cZ toho plyne, \u017ee mno\u017eina Y je u\u010desan\u00e1. Spr\u00e1vn\u011b bych m\u011bl asi \u0159\u00edkat, \u017ee to z toho poplyne, a\u017e to dok\u00e1\u017eu.\u201d<\/li>\n<li><em>Pan Jel\u00ednek napsal na tabuli:<\/em> \u201cPozn\u00e1mka (Siln\u00e1 v\u011bta o perfektn\u00edch grafech, Chudnovsky, Robertson, Seymour, Thomas, 2002, datum publikace 2006)\u201d.<\/li>\n<li><em>Pan Jel\u00ednek napsal na tabuli:<\/em> \u201cBurnsideovo lemma (Cauchy, Frobenius, 1887)\u201d <em>a pokra\u010duje:<\/em> \u201cPan Burnside lemma jen zm\u00ednil ve sv\u00e9 knize, p\u0159esto se tento n\u00e1zev ujal. N\u011bkte\u0159\u00ed mu proto \u0159\u00edkaj\u00ed lemma, kter\u00e9 nen\u00ed Burnsideovo.\u201d<\/li>\n<\/ul>\n<\/li>\n<li><strong>Matematick\u00e1 anal\u00fdza<\/strong>\n<ul>\n<li>\u201cTe\u010f dok\u00e1\u017eeme Z\u00e1kladn\u00ed v\u011btu algebry. I kdy\u017e se to jmenuje Z\u00e1kladn\u00ed v\u011bta algebry, tak se dokazuje prost\u0159edky Anal\u00fdzy. Nechci \u0159\u00edkat, \u017ee Anal\u00fdza je lep\u0161\u00ed, ale prost\u011b to tak vyjde.\u201d<\/li>\n<li>\u201cTe\u010f formuluji V\u011btu 2.12. Tak\u00e9 se j\u00ed \u0159\u00edk\u00e1 Cauchyova, ale t\u011bch je hodn\u011b.\u201d<\/li>\n<\/ul>\n<\/li>\n<li><strong>Principy po\u010d\u00edta\u010d\u016f<\/strong>\n<ul>\n<li>\u201cOno se to nezd\u00e1, ale tento p\u0159edm\u011bt je vlastn\u011b docela t\u011b\u017ek\u00fd.\u201d<\/li>\n<li>\u201cJeden z pevn\u00fdch disk\u016f ozna\u010dujeme jako master a druh\u00fd jako slave. Ale to je debiln\u00ed pojmenov\u00e1n\u00ed, ta slova nic neznamenaj\u00ed.\u201d<\/li>\n<li>\u201cNorm\u00e1ln\u011b by SSD disk p\u0159estal fungovat v \u0159\u00e1du m\u011bs\u00edc\u016f; tak\u017ee aby v\u00e1m vydr\u017eel do doby, ne\u017e v\u00e1m vypr\u0161\u00ed z\u00e1ruka, tak v\u00fdrobce p\u0159id\u00e1 t\u0159eba 50 GB nav\u00edc, o kter\u00fdch v\u00e1m ne\u0159ekne, a postupn\u011b s nimi dopl\u0148uje rozbit\u00e9 bu\u0148ky.\u201d<\/li>\n<li>\u201cBudu v\u00e1m na t\u00e9to p\u0159edn\u00e1\u0161ce trochu lh\u00e1t. Na st\u0159edn\u00ed \u0161kole v\u00e1s tak\u00e9 u\u010dili hodn\u011b l\u017e\u00ed. T\u0159eba jste mo\u017en\u00e1 sly\u0161eli o kvantov\u00e9 mechanice nebo teorii relativity. Kdy\u017e j\u00e1 tady te\u010f chod\u00edm, tak pro m\u011b a kolem m\u011b te\u010f \u010das plyne rychleji, tak\u017ee se do\u010dk\u00e1m konce t\u00e9to p\u0159edn\u00e1\u0161ky d\u0159\u00edve ne\u017e vy, ale asi si to nebudu schopen zm\u011b\u0159it. Pro tuto situaci, kdy\u017e nejsem Superman, a nel\u00edt\u00e1m fakt rychle, tak to nem\u00e1 v\u00fdznam. Podobn\u011b, podle kvantov\u00e9 mechaniky, kdy\u017e se tady rozb\u011bhnu proti zdi, tak je \u0161ance, \u017ee se protuneluju tam do chodby, ale my si klidn\u011b m\u016f\u017eeme \u0159\u00edct, \u017ee (jako podle Newtonovsk\u00e9 mechaniky) je ta \u0161ance nulov\u00e1.\u201d<\/li>\n<li>\u201cNejlep\u0161\u00ed casy jsou ty nejjednodu\u0161\u0161\u00ed. Kdy\u017e m\u00e1 case hodn\u011b v\u011btr\u00e1\u010dk\u016f, tak nechlad\u00ed tu prost\u0159edn\u00ed, nejd\u016fle\u017eit\u011bj\u0161\u00ed \u010d\u00e1st. Tak\u017ee kdy\u017e si koup\u00edte case za hodn\u011b tis\u00edc, tak v\u00e1m akor\u00e1t bude d\u011blat hodn\u011b hluku, to je asi jedin\u00e1 v\u00fdhoda, kterou tak z\u00edsk\u00e1te.\u201d<\/li>\n<li>\u201cSATA je jako PATA, ale s\u00e9riov\u00e1. Vypad\u00e1 takhle, vid\u00edte, je to \u010derven\u00e9, tedy je to daleko jednodu\u0161\u0161\u00ed.\u201d<\/li>\n<li>\u201cTechnologie Plug and Play zp\u016fsob\u00ed, \u017ee za\u0159\u00edzen\u00ed a po\u010d\u00edta\u010d se dohodnou na adres\u00e1ch, na jak\u00fdch bude za\u0159\u00edzen\u00ed poslouchat, a \u017ee po\u010d\u00edta\u010d je schopn\u00fd s\u00e1m detekovat za\u0159\u00edzen\u00ed. N\u011bkdy to nefunguje \u00fapln\u011b dob\u0159e. Proto se tomu ob\u010das \u0159\u00edk\u00e1 taky Plug and Pray.\u201d<\/li>\n<li>\u201cPrvn\u00ed po\u010d\u00edta\u010de IBM byly slo\u017een\u00e9 z dostupn\u00fdch komponent, tak\u017ee ka\u017edej v gar\u00e1\u017ei skl\u00e1dal vlastn\u00ed ekvivalentn\u00ed po\u010d\u00edta\u010de za polovi\u010dn\u00ed ceny. To je jako dneska, kdy Apple bere stejn\u00e9 komponenty jako ostatn\u00ed v\u00fdrobci a prod\u00e1v\u00e1 je za dvojn\u00e1sobek, tak p\u0159edt\u00edm to bylo obr\u00e1cen\u011b.\u201d<\/li>\n<li>\u201cKolega Jirovsk\u00fd u\u010dil tuto p\u0159edn\u00e1\u0161ku kdysi d\u00e1vno, kdy\u017e j\u00e1 jsem byl na magistersk\u00e9m studiu. Pokud nechcete \u010d\u00edst komunistickou literaturu, tak rozhodn\u011b nedoporu\u010duju skripta od kolegy Jirovsk\u00e9ho, proto\u017ee jsou pln\u00e1 polopravd a l\u017e\u00ed. Kdy\u017e na n\u011b naraz\u00edte, tak je p\u0159esu\u0148te do n\u011bjak\u00e9 spr\u00e1vn\u00e9 sekce jako \u201chumoristick\u00e1 literatura\u201d nebo \u201codpad\u201d a hledejte jinou literaturu.\u201d<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>V\u0161echny n\u00e1sleduj\u00edc\u00ed hl\u00e1\u0161ky poch\u00e1z\u00ed od u\u010ditel\u016f na MFF b\u011bhem m\u00e9ho bakal\u00e1\u0159sk\u00e9ho studia: Pokro\u010dil\u00e9 programov\u00e1n\u00ed pro .NET 1 \u201eMetoda IgnoreNonSpace neignoruje nemezery, jak by se mohlo zd\u00e1t, ale ve skute\u010dnosti znamen\u00e1 Ignore Non-Space Combining Characters.\u201c \u201eV\u00edcevl\u00e1knov\u00e9 programov\u00e1n\u00ed je t\u011b\u017ek\u00e9. To je v\u011bc, kterou je t\u0159eba si uv\u011bdomit.\u201c \u201eJedna varianta je, \u017ee jsou dv\u011b varianty vytv\u00e1\u0159en\u00ed vl\u00e1kna.\u201c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[10],"class_list":["post-349","post","type-post","status-publish","format-standard","hentry","category-blog","tag-blog-czech"],"_links":{"self":[{"href":"https:\/\/hudecekpetr.cz\/cs\/wp-json\/wp\/v2\/posts\/349","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hudecekpetr.cz\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hudecekpetr.cz\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hudecekpetr.cz\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hudecekpetr.cz\/cs\/wp-json\/wp\/v2\/comments?post=349"}],"version-history":[{"count":4,"href":"https:\/\/hudecekpetr.cz\/cs\/wp-json\/wp\/v2\/posts\/349\/revisions"}],"predecessor-version":[{"id":373,"href":"https:\/\/hudecekpetr.cz\/cs\/wp-json\/wp\/v2\/posts\/349\/revisions\/373"}],"wp:attachment":[{"href":"https:\/\/hudecekpetr.cz\/cs\/wp-json\/wp\/v2\/media?parent=349"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hudecekpetr.cz\/cs\/wp-json\/wp\/v2\/categories?post=349"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hudecekpetr.cz\/cs\/wp-json\/wp\/v2\/tags?post=349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}