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tyru 2017/07/04

c

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Big Sky :: Ruby ã® Array#<< ã¯ Array#push ã‚ˆã‚Šã‚‚é€Ÿã„ã‹

å··ã®å™‚ã§ Ruby ã® Array#<< ãŒ Array#push ã‚ˆã‚Šã‚‚é€Ÿã„ã¨èžã„ãŸã®ã§èª¿ã¹ã¦ã¿ãŸã€‚ã¾ãšã¯ãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯ã‚’å–ã£ã¦ã¿ãŸã€‚ requireÂ 'benchmark' Benchmark.bmÂ 10Â doÂ |r| r.reportÂ "push"Â do 8000000.timesÂ do;Â [].push(1);Â end end r.reportÂ "<<"Â do 8000000.timesÂ do;Â []Â <<1;Â end end end çµæžœã¯ä»¥ä¸‹ã®é€šã‚Šã€‚ userÂ Â Â Â systemÂ Â Â Â Â Â totalÂ Â Â Â Â Â Â Â real pushÂ Â Â Â Â Â Â Â 1.570000Â Â 0.000000Â Â 1.570000 (Â Â 1.579687) <<Â Â Â Â Â Â Â Â Â Â 1.280000Â Â 0.000000Â Â 1.280000 (Â Â 1.288951) ç¢ºã‹ã« Array#<< ã®

tyru 2017/02/12

ruby
c

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ãƒ—ãƒªãƒ—ãƒã‚»ãƒƒã‚µã¯æ‰€è©®æ–‡å—åˆ—ç½®æ›ã€è¨ˆç®—ãªã‚“ã¦ã§ãã‚„ã—ãªã„â€¦ãã†æ€ã£ã¦ã„ã‚‹æ–¹ã¯å¤šã„ã§ã—ã‚‡ã†ã€‚ã—ã‹ã—ãã‚Œã¯é•ã„ã¾ã™ã€‚è¨ˆç®—ã§ãã¾ã™ã€‚ æœ¬æ—¥ã®ç›®çš„ã¯ãƒ—ãƒªãƒ—ãƒã‚»ãƒƒã‚µã§è¶³ã—ç®—ã§ã™ã€‚ADD(3, 2)ã¨æ›¸ã‘ã°5ã¨ç”ãˆã¦ãã‚Œã‚‹é–¢æ•°ãƒžã‚¯ãƒã‚’ä½œã£ã¦ã¿ã¾ã—ã‚‡ã†ã€‚ ãŠã£ã¨ã€#define ADD(m, n) ((m) + (n)) ã¨ã‹ã§ã¯ã‚ã‚Šã¾ã›ã‚“ã€‚ã“ã‚Œã§è¶³ã—ç®—ã‚’ã™ã‚‹ã®ã¯èª°ã‹ã€ãã‚Œã¯ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ãƒ»å®Ÿè¡Œã—ãŸã¨ãã®å‡¦ç†ç³»ã§ã™ã€‚ ä»Šæ—¥ã®ç›®çš„ã¯ã‚ãã¾ã§ã‚‚ã€ãƒ—ãƒªãƒ—ãƒã‚»ãƒƒã‚µã¨ã„ã†å‡¦ç†ç³»ã«é–‰ã˜ãŸè¶³ã—ç®—ã‚’å®šç¾©ã™ã‚‹ã“ã¨ã§ã™ã€‚è¨€ã„æ›ãˆã‚Œã°ãƒ—ãƒªãƒ—ãƒã‚»ã‚¹ãŒçµ‚ã‚ã£ãŸæ™‚ç‚¹ã§çµæžœãŒã§ã¦ã„ãªã„ã¨ã„ã‘ã¾ã›ã‚“ã€‚ã‚ã¨ãªã‚“ã‹ç´°ã‹ã„ã“ã¨ã¯ã‚ã‚‹æ„Ÿã˜ãŒã—ã¾ã™ãŒã€ã‚‚ã†ã‚ã‚“ã©ã„ã®ã§æ—©é€Ÿå§‹ã‚ã¾ã—ã‚‡ã†ã€‚ ã¾ãšãƒ—ãƒªãƒ—ãƒã‚»ãƒƒã‚µã«ãŠã‘ã‚‹æ•°ã‚’å–ã‚Šæ±ºã‚ã¦ãŠãã¾ã™ã€‚æ•°ã¨ã¯ã€æ•°å—ã®ã¿ã§æ§‹æˆã•ã‚ŒãŸãƒˆãƒ¼ã‚¯ãƒ³ã®ã“ã¨ã§ã™ã€‚æ•°å—ã¨ã¯ã€ãƒˆãƒ¼ã‚¯ãƒ³ã¨ã¯ä½•ã‹ãªã©ã¯ã‚ã‚“ã©ã„ã®ã§å¸¸è˜çš„ã«è€ƒãˆã¦ãã ã•ã„ã€‚

tyru 2016/12/19

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ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªžC++ã®ãƒ˜ãƒ³ãƒ†ã‚³ãªæ¼”ç®—åã€‚ðŸ’˜(U+1F498) #include <iostream> int main() { int n = 100; while ( 0 <-------------------- n) { // !? std::cout << n << ' '; } } å®Ÿè¡Œçµæžœï¼š 90 80 70 60 50 40 30 20 10 ã‚¿ãƒæ˜Žã‹ã— å‰æŽ²C++ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã®æŒ¯ã‚‹èˆžã„ã‚’æ‹¬å¼§ã‚’ç”¨ã„ã¦æ˜Žç¢ºåŒ–ã™ã‚‹ã€‚intåž‹ã®å¤‰æ•°nã«å¯¾ã—å‰ç½®ãƒ‡ã‚¯ãƒªãƒ¡ãƒ³ãƒˆæ¼”ç®—åã‚’10å›žé©ç”¨ã—ã€ãã®çµæžœã‚’å€¤0ã¨æ¯”è¼ƒã—ã¦ã„ã‚‹ã€‚C++ã§ã¯çµ„è¾¼ã¿å‰ç½®ãƒ‡ã‚¯ãƒªãƒ¡ãƒ³ãƒˆæ¼”ç®—åã®æˆ»ã‚Šå€¤ã¯å·¦è¾ºå€¤(lvalue)ã¨ãªã‚‹ãŸã‚ã€è©²å½“ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã¯well-definedã¨ãªã‚‹ã€‚ int n = 100; while ( 0 < --(--(--(--(--(--(--(--(--(--n))))))))) ) { s

tyru 2016/12/07

C++ ã§ã¯ well-definedã€‚C ã§ã¯ ill-formed

C++
c

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Cè¨€èªžã€çŸ¥ã£ã¦ã‚‹ã¤ã‚‚ã‚Šï¼Ÿ | POSTD

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tyru 2016/12/04

c

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tyru 2014/10/03

c

ãƒªãƒ³ã‚¯

Goè¨€èªž+SWIGã§Cè¨€èªžã®ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã‚’å‘¼ã³å‡ºã™ - ã‚ã‚“ã“ã²ã®ã«ã£ã

Goè¨€èªžã®ãƒªãƒªãƒ¼ã‚¹ç‰ˆãŒå‡ºãŸã¨ã„ã†ã“ã¨ã§ã€ä»Šå›žã¯SWIGã§Cè¨€èªžã§æ›¸ã‹ã‚ŒãŸãƒ©ã‚¤ãƒ–ãƒ©ãƒªã®ãƒ©ãƒƒãƒ‘ãƒ¼ã‚’ç”Ÿæˆã—ã¦ã¿ã¾ã™ã€‚ Cè¨€èªžã ã£ãŸã‚‰ç›´ã§å‘¼ã¹ã‚‹ã®ã§ã™ãŒã€C++ã®ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã‚’ä½¿ã†ãŸã‚ã«ã¯SWIGã‚’ä½¿ã†ã¨éžå¸¸ã«ä¾¿åˆ©ãªã®ã§ã€ã¾ãšã¯Cè¨€èªžã§ç·´ç¿’ã—ã¦ã¿ãŸã„ã¨æ€ã„ã¾ã™ã€‚ ç’°å¢ƒã¯ Ubuntu 11.10 GCC 4.6 Go1 SWIG 2.0.4 ã§ã™ã€‚ å‚è€ƒãƒšãƒ¼ã‚¸ã¯ SWIG and Go http://www.swig.org/Doc2.0/Go.html ã§ã™ã€‚ ã¾ãšã¯Goè¨€èªžã‹ã‚‰å‘¼ã³å‡ºã—ãŸã„Cã®ã‚³ãƒ¼ãƒ‰ã‚’æ›¸ãã¾ã™ã€‚ Hoge.h int Nibai(int num); Hoge.c #include "Hoge.h" int Nibai(int num) { return num * 2; } æ¬¡ã«SWIGãŒã“ã®ã‚³ãƒ¼ãƒ‰ã‚’è§£é‡ˆã™ã‚‹ãŸã‚ã®è¨å®šãƒ•ã‚¡ã‚¤ãƒ«(.i)ã‚’æ›¸ãã¾ã™ã€‚ Hoge.i %module H

tyru 2014/07/08

ãƒªãƒ³ã‚¯

Big Sky :: clib ã®ä½¿ã„å‹æ‰‹ã«ãƒžã‚¸æ„Ÿå‹•ã—ãŸ

Cè¨€èªžã§ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚’æ›¸ãã®ã¯ä»–ã®è¨€èªžã¨æ¯”ã¹ã¦å°‘ã—æ°—åˆãŒå¿…è¦ã§ã™ã‚ˆãã€‚ä¾‹ãˆã° HTTPã‹ã‚‰ãƒ‡ãƒ¼ã‚¿ã‚’å–å¾—ã™ã‚‹ å–å¾—ã—ãŸãƒ‡ãƒ¼ã‚¿ã‚’ json ãƒ‘ãƒ¼ã‚¹ã™ã‚‹ çµæžœã®ä¸€éƒ¨ã‚’è‰²ä»˜ãã§è¡¨ç¤ºã™ã‚‹ ã“ã‚“ãªå ´åˆã€Cè¨€èªžãƒ—ãƒã‚°ãƒ©ãƒžã¯ ã€ŒHTTP ã‹ã€ã˜ã‚ƒãcurlã‹ãªã€ ã€ŒJSON ã‹ã€parson ã‹ãªã€ ã€Œè‰²è¡¨ç¤ºã‹...ã‚¨ã‚¹ã‚±ãƒ¼ãƒ—ã‚·ãƒ¼ã‚±ãƒ³ã‚¹ã§ã‚‚ã„ã„ã‘ã©WindowsãŒãªãƒ¼...ã€ ã¨ã„ã£ãŸäº‹ã‚’è€ƒãˆã€ãã“ã‹ã‚‰ curl ã‚„ parson ã¨ã„ã£ãŸè³‡æã®èª¿é”ã‚’å§‹ã‚ã‚‹äº‹ã«ãªã‚Šã¾ã™ã€‚é€”ä¸ã§æ–°ã—ã„æ©Ÿèƒ½ã‚’è¿½åŠ ã—ãŸããªã‚Šã€ãã‚Œã‚’å¤–éƒ¨ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã«é ¼ã‚‹å ´åˆã ã¨ãã®éƒ½åº¦è³‡æã‚’èª¿é”ã™ã‚‹å¿…è¦ãŒã‚ã‚Šã€æ€è€ƒã‚’åœæ¢ã—ãªã‘ã‚Œã°ãªã‚Šã¾ã›ã‚“ã€‚ ã“ã®è¾ºã¯ ruby ã‚„ perlã€nodejsã€golang ç‰ã®æ§˜ã«ã€ã¡ã‚‡ã£ã¨ã—ãŸæ‰‹é–“ã ã‘ã§æ¸ˆã¾ã›ãŸã„ç‰©ã§ã™ã€‚ ã¾ãŸCè¨€èªžã®å ´åˆã€ãƒ˜ãƒƒãƒ€ãƒ•ã‚¡ã‚¤ãƒ«ã¯ã‚·ã‚¹ãƒ†ãƒ ã® include ãƒ•ã‚©ãƒ«ãƒ€ã«æä¾›å…ƒãŒæœŸå¾…ã™

tyru 2014/06/28

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Cè¨€èªžã§ã®ãƒãƒ¼ã‚¿ãƒ–ãƒ«ãªstring IOã«ã¤ã„ã¦ - wasabizã®æ—¥è¨˜

2014-01-17 Cè¨€èªžã§ã®ãƒãƒ¼ã‚¿ãƒ–ãƒ«ãªstring IOã«ã¤ã„ã¦ Q. Cè¨€èªžã§ãƒãƒ¼ã‚¿ãƒ–ãƒ«ãªstring IOã‚’å®Ÿç¾ã™ã‚‹æ‰‹è»½ã§ç°¡å˜ãªæ–¹æ³•ã¯ã‚ã‚Šã¾ã™ã‹ï¼Ÿ A. ãã‚“ãªã‚‚ã®ã¯ãªã„ã€‚ string IOãªã„ã—memoryã«å¯¾ã™ã‚‹IOã‚’FILEãƒã‚¤ãƒ³ã‚¿ã‚’é€šã—ã¦è¡Œã„ãŸã„ã¨ã„ã†è¦æ±‚ã¯å¸¸ã«å˜åœ¨ã™ã‚‹ã€‚ãŒã€æ®‹å¿µãªãŒã‚‰Cè¨€èªžã®ä»•æ§˜ã¯ãã‚“ãªã“ã¨ã‚’è¨±ã—ã¦ãã‚Œãªã„ã€‚ãã‚‚ãã‚‚Cã®æ¨™æº–ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã«ãªã«ã‹ã‚’æ±‚ã‚ã‚‹ã®ã¯ãŠãŠã‚ˆãé–“é•ã£ã¦ã„ã‚‹ã€‚ çµè«–ã¨ã—ã¦ã€è¡¨é¡Œã®ã‚ˆã†ãªã‚‚ã®ã‚’ã‚„ã‚ŠãŸã‘ã‚Œã°FILEãƒã‚¤ãƒ³ã‚¿ã‚‚ã©ãã‚’è‡ªä½œã™ã‚‹ã—ã‹ç„¡ã„ã€‚ã»ã‚“ã¨ã†ã«ã€ãã‚Œã—ã‹ãªã„ã€‚æ§‹é€ ä½“ã‚’å®šç¾©ã—ã¦ã€ãƒãƒƒãƒ•ã‚¡ãƒªãƒ³ã‚°ã‚’è¡Œã£ã¦ã€stdioã®é–¢æ•°ã«ç›¸å½“ã™ã‚‹ã‚‚ã®ã‚’è‡ªåˆ†ã§ç”¨æ„ã—ãªãã‚ƒã„ã‘ãªã„ã€‚ã‚‚ã¡ã‚ã‚“ã€ä¸å®Œå…¨ã ãŒã‚ˆã‚Šç°¡å˜ãªæ–¹æ³•ã¯ã„ãã¤ã‚‚ã‚ã‚‹ã€‚ ä¸å®Œå…¨ãªæ–¹æ³•1. ç’°å¢ƒä¾å˜ã®ã‚³ãƒ¼ãƒ‰ ã“ã‚ŒãŒä¸€ç•ªæ‰‹è»½ã ã—ã€ç„¡é›£ã ã€‚glibcãªã‚‰fmemopenã‚„open_memstr

tyru 2014/01/18

c

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ruby/ruby#495æ—¥æœ¬èªžè§£é¡Œ

ä¸‰è¡Œã§åœéƒ¨ã£ã¦å£ã ã‘é‡ŽéƒŽã§ã©ã†ã›ãŸã„ã—ãŸã‚‚ã‚“æ›¸ã‘ãªã„ã‚“ã§ã—ã‚‡? [1] [2]â†’ è¦‹ã›ã¦ã‚„ã‚“ã‚ˆã‚´ãƒ©ã‚¡â†’ ã”ã‚‰ã‚“ã®æœ‰æ§˜æ•™è¨“: é™°å£ã¯æœ¬äººã«èžã“ãˆãªã„æ‰€ã§ã€‚ã•ã™ãŒã«åæŒ‡ã—ã¯ã¾ãšã„ã€‚ ã©ã†ã„ã†ãƒ‘ãƒƒãƒã‹Rubyã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚µã‚¤ã‚ºã‚’å¤‰æ›´(å¤§ãã)ã™ã‚‹ã€‚ãã®ã“ã¨ã«ã‚ˆã‚Šç¬¬ä¸€ç¾©çš„ã«ã¯CPUã‚ãƒ£ãƒƒã‚·ãƒ¥ãƒŸã‚¹ãƒ’ãƒƒãƒˆãŒå‰Šæ¸›ã•ã‚Œã‚‹ã€‚å‰¯æ¬¡çš„ä½œç”¨ã¨ã—ã¦å¤§ãããªã£ãŸä½™å‰°ã®é ˜åŸŸã«ãƒ‡ãƒ¼ã‚¿ã‚’è©°ã‚è¾¼ã‚ã‚‹ã®ã§ä¸é–“æ§‹é€ ä½“ã‚’æ¸›ã‚‰ã—ã¦ãƒ¡ãƒ¢ãƒªã‚¢ãƒã‚±ãƒ¼ã‚·ãƒ§ãƒ³ãŒæœ€é©åŒ–ã•ã‚Œã‚‹ã€‚ãã‚Œã‚‰ã®ç·åˆçš„ãªçµæžœã¨ã—ã¦å…¨ä½“ã«é«˜é€ŸåŒ–ã™ã‚‹ã€‚ å‰å²ã¨ã¯ã„ãˆã“ã®ã‚¢ã‚¤ãƒ‡ã‚£ã‚¢ã€ã¹ã¤ã«æœ€è¿‘æ¶Œã„ã¦å‡ºãŸã‚‚ã®ã§ã‚‚ãªã„ã€‚ã¨ã„ã†ã‹ã€ä¿ºãŒã¾ã å¤§å¦é™¢ã§NetBurstã¨æˆ¯ã‚Œã¦ãŸã“ã‚ã®ç™ºæƒ³ã ã‹ã‚‰ã€ã‹ã‚Œã“ã‚Œ7ï½ž8å¹´ç‰©ã ãªã€‚ã—ã‹ã‚‚ã“ã®é–“ã¹ã¤ã«ç§˜å¯†ã«ã—ã¦ãŸã‚ã‘ã§ã‚‚ãªãã¦ã€Rubyã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã£ã¦ç´ æ•°å¹…ã§ã„ããªãã?ã£ã¦ã®ã¯ã€ã‚ã‚Šã¨å£é ã§ã¯æŠ˜ã«è§¦ã‚Œã¦è¨€ã£ã¦ãŸã®ã§ã€èžã„ãŸã“ã¨ãŒã‚ã‚‹äººã‚‚ã„ã‚‹ã¯ãšã‹

tyru 2014/01/10

ruby
c

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Why does the C preprocessor interpret the word "linux" as the constant "1"?

Why does the C preprocessor in GCC interpret the word linux (small letters) as the constant 1? test.c: #include <stdio.h> int main(void) { int linux = 5; return 0; } Result of $ gcc -E test.c (stop after the preprocessing stage): .... int main(void) { int 1 = 5; return 0; } Which of course yields an error. (BTW: There is no #define linux in the stdio.h file.)

tyru 2013/10/12

c

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http://blog.monoweb.info/blog/2012/07/14/c99-array/

tyru 2013/09/02

ã¤ã‚‰ã„

c99
c

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é©å‘½ã®æ—¥ã€…ï¼ attribute(alloc_size) ã‚’ä½¿ã‚ãªã„ã¨_FORTIFY_SOURCE ã‚’æ´»ã‹ã›ãªã„ã‚ˆã€‚ã¨ã„ã†è©±

_FORTIFY_SOURCEã¨ã„ã†ãƒãƒƒãƒ•ã‚¡ãƒ¼ã‚ªãƒ¼ãƒãƒ¼ãƒ•ãƒãƒ¼æ”»æ’ƒã‚’é˜²ãã®ã«ã¨ã¦ã‚‚æœ‰ç”¨ãªãƒžã‚¯ãƒãŒã‚ã‚‹ã€‚ çŸ¥ã‚‰ãªã‹ã£ãŸäººã¯ä»¥ä¸‹ã®manã§ã‚‚ã¾ãšè¦‹ã¦ãã ã•ã„ http://linuxjm.sourceforge.jp/html/LDP_man-pages/man7/feature_test_mac ros.7.html _FORTIFY_SOURCE (glibc 2.3.4 ä»¥é™) ã“ã®ãƒžã‚¯ãƒã‚’å®šç¾©ã™ã‚‹ã¨ã€æ–‡å—åˆ—ã‚„ãƒ¡ãƒ¢ãƒªã®æ“ä½œã‚’è¡Œã†æ§˜ã€…ãªé–¢æ•°ã‚’ ä½¿ç”¨ã™ã‚‹éš›ã«ãƒãƒƒãƒ•ã‚¡ã‚ªãƒ¼ãƒãƒ¼ãƒ•ãƒãƒ¼ã‚’æ¤œå‡ºã™ã‚‹ãŸã‚ã®è»½ã‚ã®ãƒã‚§ãƒƒã‚¯ãŒ å®Ÿè¡Œã•ã‚Œã‚‹ã‚ˆã†ã«ãªã‚‹ã€‚ã™ã¹ã¦ã®ãƒãƒƒãƒ•ã‚¡ã‚ªãƒ¼ãƒãƒ¼ãƒ•ãƒãƒ¼ãŒæ¤œå‡ºã•ã‚Œã‚‹ ã‚ã‘ã§ã¯ãªãã€ã‚ãã¾ã§ã‚ˆãã‚ã‚‹ä¾‹ã«ã¤ã„ã¦ã ã‘ã§ã‚ã‚‹ã€‚ ç¾åœ¨ã®å®Ÿè£…ã§ã¯ã€ä»¥ä¸‹ã®é–¢æ•°ã«ãƒã‚§ãƒƒã‚¯ãŒè¿½åŠ ã•ã‚Œã¦ã„ã‚‹: memcpy(3), mem pcpy(3), memmove(3), memset(3), stpcpy(3),

tyru 2013/05/05

Vimã§ã‚‚_FORTIFY_SOURCEä½¿ã£ã¦ãŸè¨˜æ†¶ã‚ã‚‹ã‘ã©ã¡ã‚ƒã‚“ã¨æ´»ã‹ã›ã¦ã‚‹ã®ã‹ãªï¼Ÿã¨æ€ã£ã¦æ¤œç´¢ã—ãŸã‚‰__attribute__((unused))ã—ã‹ä½¿ã£ã¦ãªã‹ã£ãŸã€‚ã§ã‚‚ã‹ãªã‚Šå¤šãã®ãƒ—ãƒ©ãƒƒãƒˆãƒ•ã‚©ãƒ¼ãƒ ã«ç§»æ¤ã•ã‚Œã¦ã‚‹ã‹ã‚‰ä½¿ã„ã«ãã„ã‚“ã ã‚ã†ã‹ã€‚

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feofé–¢æ•°ã§whileãƒ«ãƒ¼ãƒ—ã‚’å›žã™å¥´ã¯ãƒ‰ç´ äºº - hnwã®æ—¥è¨˜

ï¼ˆ2013-04-07 01:30è¿½è¨˜ï¼‰è£œè¶³ã®ã‚³ãƒ¼ãƒ‰ã«æ¥ãšã‹ã—ã„é–“é•ã„ãŒã‚ã£ãŸã®ã‚’ä¿®æ£ã—ã¾ã—ãŸã€‚@nonakapã•ã‚“ã€id:s-tomoã•ã‚“ã€ã”æŒ‡æ‘˜ã‚ã‚ŠãŒã¨ã†ã”ã–ã„ã¾ã™ã€‚ ï¼ˆ2013-04-07 10:00è¿½è¨˜ï¼‰ã€Œè£œè¶³ãã®2ã€ã‚’æ›¸ãè¶³ã—ã¾ã—ãŸã€‚ ï¼ˆ2017-04-23è¿½è¨˜ï¼‰è«–æ—¨ãŒã‚ã‹ã‚Šã«ãã„éƒ¨åˆ†ãŒã‚ã£ãŸã®ã§ã€æ•´ç†ã—ã¾ã—ãŸ stackoverflowã®è¨˜äº‹ã€Œâ€œwhile( !feof( file ) )â€ is always wrongã€ã‚’ã–ã£ãã‚Šç¿»è¨³ã—ã¦ã¿ã¾ã™ã€‚ã“ã‚Œã¯William Pursellã•ã‚“ã«ã‚ˆã‚‹è‡ªä½œè‡ªæ¼”ã‚¹ãƒ¬ï¼ˆå›žç”è€…ã‚‚æœ¬äººï¼‰ã§ã€Cã§while( !feof( file ) )ã¨ã„ã†ãƒ«ãƒ¼ãƒ—ã‚’ä½œã‚‹ã®ãŒæ‚ªã„ç†ç”±ã‚’èª¬æ˜Žã™ã‚‹ã‚‚ã®ã§ã™ã€‚ ã¡ãªã¿ã«PHPã«ã¤ã„ã¦ã‚‚ã»ã¼åŒã˜ã“ã¨ãŒè¨€ãˆã¾ã™ã®ã§ã€PHPãƒ—ãƒã‚°ãƒ©ãƒžã®æ–¹ã«ã‚‚ä¸€èªã‚’ãŠå‹§ã‚ã—ã¾ã™ï¼ˆPHPã®ä¸»è¦ãªãƒ•ã‚¡ã‚¤ãƒ«æ“ä½œé–¢æ•°ã¯Cã¨ã»ã¼åŒã˜ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ•ã‚§ãƒ¼ã‚¹

tyru 2013/04/07

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ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ç”»åƒãƒ•ã‚¡ã‚¤ãƒ«(BMP)ã«ã—ãŸã‚Šæˆ»ã—ãŸã‚Š - Let's write Î²

æ™®é€šã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ç”»åƒã«ã—ãŸã‚Šã€ãã®ç”»åƒã‹ã‚‰ãƒ•ã‚¡ã‚¤ãƒ«ã«æˆ»ã—ãŸã‚Šã—ãŸã‚‰é¢ç™½ã„ã ã‚ã†ãªã ã¨æ€ã£ã¦ã„ãŸã®ã§ã€ä»ŠBMPã«ã™ã‚‹ã‚‚ã®ã‚’æ›¸ã„ã¦ã¿ã¾ã—ãŸã€‚ #include <stdio.h> #include <stdlib.h> #include <math.h> #include "bmp.h" main(int argc, char** argv) { FILE *fp; fpos_t sz; int v, cnt; if(argc < 2) { exit(1); } if((fp = fopen(argv[1],"r")) == NULL) { exit(1); } cnt = 0; //Get File size fseek( fp, 0, SEEK_END ); fgetpos( fp, &sz ); printf("file size: %d\n",sz); fseek( fp, 0, S

tyru 2012/12/21

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Linux Kernelã®Linked Listã®å®Ÿè£…ãŒé¢ç™½ã„ä»¶ - æ„›ã¨å‹‡æ°—ã¨ç¼¶ãƒ“ãƒ¼ãƒ«

æœ€è¿‘ã€Robert Loveå…ˆç”Ÿã®æœ¬ã‚’æš‡ãªæ™‚ã«ãƒ€ãƒ©ãƒ¼ã¨èªã‚“ã§ã„ãŸã‚Šã™ã‚‹ã‚ã‘ã§ã™ãŒã€ãã‚Œã®ä¸ã«Linux Kernelå†…éƒ¨ã§ä½¿ã‚ã‚Œã¦ã„ã‚‹Linked Listã®å®Ÿè£…ãŒæ›¸ã„ã¦ã‚ã£ã¦é¢ç™½ã‹ã£ãŸã®ã§å…±æœ‰ã€‚ ã¾ãšã€Linked Listã®ä¸€å€‹ä¸€å€‹ã®ã‚¨ãƒ³ãƒˆãƒªã‚’è¡¨ã™structã‚’å®šç¾©ã—ã¾ã™ã€‚ struct list_head { struct list_head *next, *prev; }; ã„ã‚„ã„ã‚„ã„ã‚„ã„ã‚„ã€‚ã„ã‹ã«CåŠ›ã®ä½Žã„åƒ•ã§ã‚‚æµçŸ³ã«ã“ã‚Œã¯ã‚ãã¾ã›ã‚“ã€‚é¨™ã•ã‚Œã¾ã›ã‚“ã‚ˆã€‚å‰å¾Œã®ã‚¨ãƒ³ãƒˆãƒªã¸ã®ãƒã‚¤ãƒ³ã‚¿ã¯ç¢ºã‹ã«ã‚ã‚‹ã‘ã‚Œã©ã‚‚ã€ã“ã‚Œã«ã¯ãƒ‡ãƒ¼ã‚¿ã‚’æŒ‡ã™ãŸã‚ã®ãƒã‚¤ãƒ³ã‚¿ãŒãªã„ã˜ã‚ƒãªã„ã®ã€‚ãŠã˜ã„ã¡ã‚ƒã‚“ã¾ãŸãƒ‡ãƒ¼ã‚¿å¿˜ã‚Œã¦ãã¡ã‚ƒã£ãŸã®ï¼Ÿã„ã‚„ã‚ããˆã€‚ ãŠã˜ã„ã¡ã‚ƒã‚“ã¯è¨€ã£ãŸã€‚ã€Œãã‚Œã¯ãŠå‰ã®çŸè¦‹ã¨ã„ã†ã‚‚ã®ã˜ã‚ƒã€‚ã“ã®Linked Listã¯ä»¥ä¸‹ã®ã‚³ãƒ¼ãƒ‰ã®ã‚ˆã†ã«ãƒ‡ãƒ¼ã‚¿æ§‹é€ ã«åŸ‹ã‚è¾¼ã‚“ã§ä½¿ã†ã‚‚ã®ãªã‚“ã˜ã‚ƒã‚ˆã€‚ã€ãã—ã¦ãã‚Œã¯æ£ã—ã‹ã£ãŸã€‚ st

tyru 2012/12/12

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å¤‰ãªçµæžœãŒå‡ºã‚‹ã‚µãƒ³ãƒ—ãƒ« ä»¥ä¸‹ã®ä¾‹ã§ã¯ã€äºŒã¤ã®ãƒ†ã‚¹ãƒˆã‚’è¡Œã£ã¦ã„ã¾ã™ã€‚ ãƒ†ã‚¹ãƒˆã®ä¸ã§ã¯www.yahoo.co.jpã¨www.google.co.jpã®ä¸¡æ–¹ã«å¯¾ã—ã¦gethostbynameã‚’é€£ç¶šçš„ã«è¡Œã£ã¦ã„ã¾ã™ã€‚ æœ¬å½“ã¯www.yahoo.co.jpã¨www.google.co.jpã®ä¸¡æ–¹ã®IPã‚¢ãƒ‰ãƒ¬ã‚¹ãŒè¡¨ç¤ºã•ã‚Œã¦æ¬²ã—ã„ã®ã§ã™ãŒã€å®Ÿéš›ã«ã¯ç‰‡æ–¹ã—ã‹è¡¨ç¤ºã•ã‚Œã¾ã›ã‚“ã€‚ #include <stdio.h> #include <winsock2.h> int main() { WSADATA wsaData; struct hostent *hostent1, *hostent2; struct in_addr inaddr1, inaddr2; WSAStartup(MAKEWORD(2,0), &wsaData); // // ãƒ†ã‚¹ãƒˆï¼‘ hostent1 = gethostbyname("www

tyru 2012/11/18

gethostbyname()ã®è¿”ã‚Šå€¤ã¯å…¨ã¦åŒã˜é ˜åŸŸã‚’æŒ‡ã—ã¦ã—ã¾ã„å¸¸ã«æœ€å¾Œã«å‘¼ã‚“ã çµæžœã«ãªã£ã¦ã—ã¾ã†ã€‚getaddrinfo()ã¯æ¯Žå›žå‹•çš„ã«ç¢ºä¿ã•ã‚Œã‚‹ã®ã§ãã®ã‚ˆã†ãªå¿ƒé…ã¯ãªã„ã€‚

network
c

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Big Sky :: Cè¨€èªžã‹ã‚‰ä½¿ãˆã‚‹JSONãƒ‘ãƒ¼ã‚µã€parson ãŒæ€ã£ãŸä»¥ä¸Šã«è‰¯ã„ä»•äº‹ã‚’ã—ã¦ã„ã‚‹ã€‚

å‰å›žã¯ JSMN ã¨ã„ã†ã®ã‚’è©¦ã—ãŸã‘ã©ã€ä»Šåº¦ã‚‚ matsuu ã•ã‚“ã®ãƒ–ã‚¯ãƒžã‹ã‚‰ã€‚ã€‚ã€‚ parson Lightweight json parser and reader written in C. http://kgabis.github.com/parson/ ç‰¹å¾´ã¯ è»½ã„ (2ãƒ•ã‚¡ã‚¤ãƒ«ã ã‘) å˜ç´”ãªAPI ãƒ‰ãƒƒãƒˆè¨˜æ³•ã«ã‚ˆã‚‹ json å€¤ã®ã‚¢ãƒ‰ãƒ¬ãƒƒã‚·ãƒ³ã‚° (Cè¨€èªžã®æ§‹é€ ä½“ã‚„OOè¨€èªžã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã«ä¼¼ãŸæ„Ÿã˜ã€‚ä¾‹: "objectA.objectB.value") C89 ã‚³ãƒ³ãƒ‘ãƒ†ã‚£ãƒ–ãƒ« ãƒ†ã‚¹ãƒˆã‚¹ãƒ¼ãƒ„ å‰å›žã® JSMN ã¨ã¯é•ã„ã€ãƒ¡ãƒ¢ãƒªã‚’å‹•çš„ã«ç¢ºä¿ã™ã‚‹ã‚¿ã‚¤ãƒ—ã€‚DOM ã®æ§˜ã«ãƒ«ãƒ¼ãƒˆãƒŽãƒ¼ãƒ‰ã‹ã‚‰æŽ¢ç´¢ã‚’å§‹ã‚ã€æœ€çµ‚çš„ã«ãƒ«ãƒ¼ãƒˆãƒŽãƒ¼ãƒ‰ã‚’æŒ‡å®šã—ã¦ãƒ¡ãƒ¢ãƒªã‚’é–‹æ”¾ã™ã‚‹ã€‚ ä»Šå›žã‚‚twitterã®ã‚¿ã‚¤ãƒ ãƒ©ã‚¤ãƒ³ã‚’ãƒ‘ãƒ¼ã‚¹ã—ã‚ˆã†ã€‚ #includeÂ <assert.h> #includeÂ <string.h> #inclu

tyru 2012/11/04

ã€ŒCè¨€èªžã®JSONãƒ‘ãƒ¼ã‚µã®ä¸ã§ã¯ã€ç§ãŒçŸ¥ã‚‹é™ã‚Šä¸€ç•ªæ‰±ã„ã‚„ã™ã„ã€ / MEMFILEã¨ã‹curlã®ã‚ãŸã‚Šã¯ã‚¹ãƒ‹ãƒšãƒƒãƒˆã‹æ—¢å˜ã‚³ãƒ¼ãƒ‰ã‹ã‚‰æŒã£ã¦ããŸã‚“ã ã‚ã†ãªã

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orangeduck/CPlus Â· GitHub

/* ** Example C+ Program */ #include "C+.h" int main(int argc, char** argv) { /* Stack objects are created using "$" */ var int_it em = $(Int, 5); var float_it em = $(Real, 2.4); var string_it em = $(String, "Hello"); /* Heap objects are created using "new" */ var it ems = new(List, 3, int_it em, float_it em, string_it em); /* Collections can be looped over */ foreach(it ems, it em) { /* Types are also obj

tyru 2012/11/01

ã¾ã‚‹ã§åˆ¥è¨€èªž

c
library

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Mitzyuki's Blog :: C ä¸ç´šè€…ãŒæ„å¤–ã¨é™¥ã‚Šã‚„ã™ã„ãƒ¯ãƒŠ

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