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C++ã«é–¢ã™ã‚‹fimbulã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (81)

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ã“ã®è¨˜äº‹ã¯C++ Advent Calendar 2014ã®21æ—¥ç›®ã«ã‚¨ãƒ³ãƒˆãƒªã—ã¦ã„ã¾ã™ã€‚ å†…å®¹ã¯C++ãƒ¡ãƒ¢ãƒªãƒ¢ãƒ‡ãƒ«ã¨é€æ¬¡ä¸€è²«æ€§ã«ã¤ã„ã¦ã®æ¦‚èª¬è¨˜äº‹ã¨ãªã£ã¦ã„ã¾ã™ã€‚ flickr / nomadic_lass ã‚‚ãã˜ å¿™ã—ã„äººã®ãŸã‚ã®ã€ŒC++ãƒ¡ãƒ¢ãƒªãƒ¢ãƒ‡ãƒ«ã€ C++ãƒ¡ãƒ¢ãƒªãƒ¢ãƒ‡ãƒ«ä¸€å•ä¸€ç” ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã‹ã‚‰ã¿ãŸã€ŒC++ãƒ¡ãƒ¢ãƒªãƒ¢ãƒ‡ãƒ«ã€ â€œãƒ¡ãƒ¢ãƒªâ€ã¨ã„ã†å…±æœ‰ãƒªã‚½ãƒ¼ã‚¹ C++ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ãŒå®Ÿè¡Œã•ã‚Œã‚‹ã¾ã§ ãƒ¡ãƒ¢ãƒªã®ä¸€è²«æ€§ã¨æ•´åˆæ€§ é€æ¬¡ä¸€è²«æ€§ãƒ¢ãƒ‡ãƒ« is Easy ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ã‹ã‚‰ã¿ãŸã€ŒC++ãƒ¡ãƒ¢ãƒªãƒ¢ãƒ‡ãƒ«ã€ ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ãƒ»ãƒ¡ãƒ¢ãƒªä¸€è²«æ€§ãƒ¢ãƒ‡ãƒ« C++ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã®è²¬ä»»ã¨è‡ªç”± å¼·ã„ãƒ¡ãƒ¢ãƒªãƒ¢ãƒ‡ãƒ« vs. å¼±ã„ãƒ¡ãƒ¢ãƒªãƒ¢ãƒ‡ãƒ« é€æ¬¡ä¸€è²«æ€§ãƒ¢ãƒ‡ãƒ« is Hard ï¼ˆæœ¬æ–‡ã®ã¿ç´„9600å—ï¼‰ ã¾ãˆãŒã When your hammer is C++, everything begins to look like a thumb
fimbul 2014/12/23
memory-model

C++
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C/C++11 mappings to processors
This document summarises some known mappings of C/C++11 atomic operations to x86, PowerPC, ARMv7, ARMv8, and Itanium instruction sequences. These are collected for discussion, not as a definitive source. At the moment, we do not include mappings for all atomic operations - for example, atomic increment is missing. We would be grateful for any suggestions. ARMv8 has additional instructions: stores
fimbul 2014/12/12
C++

Concurrent_Programming

Memory_Model
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Faith and Brave - C++ã§éŠã¼ã†
levtech.jp å‰ç·¨ã§ã¯2024å¹´ç¾åœ¨ãŠã™ã™ã‚ã—ãŸã„C++æ›¸ç±ã‚’ç´¹ä»‹ã—ã¾ã—ãŸã€‚ å¾Œç·¨ã§ã¯ã€ä»•äº‹ã§ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢é–‹ç™ºã—ãªãŒã‚‰ã‚‚ã€ä½™æš‡ã®æ™‚é–“ã«C++æ—¥æœ¬èªžãƒªãƒ•ã‚¡ãƒ¬ãƒ³ã‚¹ã‚µã‚¤ãƒˆã‚„æ›¸ç±ã®åŸ·ç†ã€å‹‰å¼·ä¼šã®é–‹å‚¬ãªã©ã‚’ã—ã¦ã„ã‚‹ç«‹å ´ã‹ã‚‰ãŠã™ã™ã‚ã—ãŸã„ã€æŠ€è¡“æ›¸ä»¥å¤–ã®æœ¬ã‚’ç´¹ä»‹ã™ã‚‹è¨˜äº‹ã‚’æ›¸ã‹ã›ã¦ã„ãŸã ãã¾ã—ãŸã€‚ levtech.jp ã‚ãƒ£ãƒªã‚¢ã¨æŠ€è¡“ã®Webãƒ¡ãƒ‡ã‚£ã‚¢ã§ã‚ã‚‹ãƒ¬ãƒãƒ†ãƒƒã‚¯LABã§ã€C++ã®æŠ€è¡“æ›¸ã‚’ç´¹ä»‹ã™ã‚‹è¨˜äº‹ã‚’æ›¸ã‹ã›ã¦ã„ãŸã ãã¾ã—ãŸã€‚ 2024å¹´ç¾åœ¨ã§C++ã‚’å¦ã¶ãŸã‚ã®ææ–™ã¨ã—ã¦å‚è€ƒã«ãªã‚Œã°å¹¸ã„ã§ã™ã€‚ github.com 2024å¹´ã‚‚CEDECã§cpprefjpæ‰€å±žã®æ–¹ã®ç™ºè¡¨ãŒã‚ã‚‹ã®ã§ã€ãã‚Œã«åˆã‚ã›ã¦cpprefjp Tã‚·ãƒ£ãƒ„ã‚’ä½œã‚Šã¾ã™ï¼ ç™ºè¡¨è€…ã ã‘ã§ãªãã€cpprefjpã®ã‚³ãƒ³ãƒˆãƒªãƒ“ãƒ¥ãƒ¼ã‚¿ãƒ¼ã¨ã‚¹ãƒãƒ³ã‚µãƒ¼ã®æ–¹ã‚‚ã€å®Ÿè²»ã‚’ã„ãŸã ã‘ã‚Œã°ç™ºæ³¨ã—ã¾ã™ã€‚ ã“ã®æ©Ÿä¼šã«ã€cpprefjp Webã‚µã‚¤ãƒˆã®ç·¨é›†ã«æŒ‘æˆ¦ãã
fimbul 2014/12/11
,[ã‚¤ãƒ†ãƒ¬ãƒ¼ã‚¿]

C++
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å•é¡Œ ä»¥ä¸‹ã®C++ã‚³ãƒ¼ãƒ‰ã‚’è€ƒãˆã‚‹ã€‚ int plus( int a, int b ) { return a + b ; } double plus( double a, double b ) { return a + b ; } ã“ã®C++ã‚³ãƒ¼ãƒ‰ã¯ã€intåž‹ã¨doubleåž‹ä»¥å¤–ã€ã‚³ãƒ¼ãƒ‰ã¯ã»ã¼åŒã˜ã§ã‚ã‚‹ã€‚ ã—ã‹ã—ã€ã»ã¨ã‚“ã©ã®ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ãƒ¼ã§ã¯intåž‹ã¨doubleåž‹ã¯æ“ä½œæ–¹æ³•ãŒç•°ãªã‚‹ãŸã‚ã€ã“ã®2ã¤ã®é–¢æ•°ã¯ã€å…¨ãåˆ¥ã®ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ãƒ¼ãŒå‡¦ç†ã§ãã‚‹ã‚³ãƒ¼ãƒ‰ã«å¤‰æ›ã•ã‚Œã‚‹ã€‚ ã¨ã“ã‚ã§ã€å¤å…¸çš„ãªCè¨€èªžã‚„C++ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ãƒ¼ã®å®Ÿè£…æ–¹æ³•ã¨ã—ã¦ã€ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ãã‚Œãžã‚Œã€ä¸€ã¤ä¸€ã¤ã®ç¿»è¨³å˜ä½ã¨ã—ã¦ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã—ã€ç¿»è¨³å˜ä½ã”ã¨ã«ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆãƒ•ã‚¡ã‚¤ãƒ«ã‚’ç”Ÿæˆã—ã€ãƒªãƒ³ã‚«ãƒ¼ã§è¤‡æ•°ã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆãƒ•ã‚¡ã‚¤ãƒ«ã‚’çµåˆï¼ˆãƒªãƒ³ã‚¯ï¼‰ã—ã¦ã€å˜ä¸€ã®ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’ç”Ÿæˆã™ã‚‹ã¨ã„ã†ã‚‚ã®ãŒã‚ã‚‹ã€‚ ã‚ˆãã‚ã‚‹å®Ÿè£…ã§ã¯ã€ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆãƒ•ã‚¡ã‚¤ãƒ«ã¯ã€ãã®ç¿»è¨³å˜ä½
fimbul 2014/12/09
C++

ãƒªãƒ³ã‚«
ãƒªãƒ³ã‚¯
C++ Name Mangling/Demangling
C++ Name Mangling/Demangling Archived Document This document is no longer current. For an excellent, more recent discussion, see Agner Fog's Calling Conventions for different C++ compilers and operating systems. Standard C++ Example The Annotated C++ Reference Manual documents one name mangling scheme. Gnu C++ The name mangling scheme seems to be based on the one in the C++ Reference Manual, and i
fimbul 2014/12/09
mangling

name mangling

C++
ãƒªãƒ³ã‚¯
C++ sequenced-before graphs
17th September 2014 i = i++ This expression, and many like it, demonstrate the sequencing rules of C++ and how they can cause your program to behave in ways you might not expect. What should the result of this expression be given some initial value for i? Questions like this are extremely frequent on Stack Overflow. In this case, the answer is that this code is completely undefined â€” it could do a
fimbul 2014/12/05
C++
ãƒªãƒ³ã‚¯
Is gcc wrong not diagnose narrowing conversions in non-type template arguments?
fimbul 2014/11/22
C++
ãƒªãƒ³ã‚¯
åˆ†å‰²ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã¨ãƒªãƒ³ã‚±ãƒ¼ã‚¸
| åˆ†å‰²ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã¨ç¿»è¨³å˜ä½ | externè¨˜æ†¶ã‚¯ãƒ©ã‚¹æŒ‡å®šå | ãƒªãƒ³ã‚±ãƒ¼ã‚¸ | ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã¨ãƒ©ã‚¤ãƒ–ãƒ©ãƒª | æ¼”ç¿’å•é¡Œ | ï¼»ä»˜éŒ²ï¼½nmã‚³ãƒžãƒ³ãƒ‰ | åˆ†å‰²ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã¨ç¿»è¨³å˜ä½ ã ã‚“ã ã‚“è¤‡é›‘ãªãƒ—ãƒã‚°ãƒ©ãƒ ã‚’é–‹ç™ºã™ã‚‹ã‚ˆã†ã«ãªã‚‹ã¨ ã‚½ãƒ¼ã‚¹ãƒ†ã‚ã‚¹ãƒˆãŒé•·ããªã‚Šï¼Œä¸€ã¤ã®ã‚½ãƒ¼ã‚¹ãƒ•ã‚¡ã‚¤ãƒ«ã§ä½œæˆã—ã¦ã„ã‚‹ã¨ å…¨ä½“ã‚’è¦‹é€šã™ã®ãŒé›£ã—ããªã£ã¦ãã¾ã™ï¼Ž ã¾ãŸã»ã‚“ã®ä¸€éƒ¨ã ã‘ã‚’ä¿®æ£ã‚’ã—ãŸã¨ãã«ã‚‚ å…¨ä½“ã‚’ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã—ç›´ã•ãªã‘ã‚Œã°ãªã‚‰ãªã„ã®ã§ï¼Œ ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã«æ™‚é–“ãŒã‹ã‹ã‚‹ã‚ˆã†ã«ãªã‚Šã¾ã™ï¼Ž ã‚ˆã£ã¦ï¼Œãƒ—ãƒã‚°ãƒ©ãƒ ã‚’ã„ãã¤ã‹ã®éƒ¨åˆ†ã«åˆ†ã‘ã¦ åˆ¥ã€…ã«é–‹ç™ºã—ãŸã„ã¨ã„ã†è¦æ±‚ãŒè‡ªç„¶ã«èµ·ã“ã£ã¦ãã¾ã™ï¼Ž ã“ã®ã‚ˆã†ãªè€ƒãˆã‹ã‚‰ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªžã«ã¯ ä¸€ã¤ã®ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’è¤‡æ•°ã«åˆ†å‰²ã§ãã‚‹æ©Ÿèƒ½ãŒæä¾›ã•ã‚Œã‚‹ã“ã¨ãŒå¤šãï¼Œ ãã®ã‚ˆã†ãªå„éƒ¨åˆ†ã®ã“ã¨ã‚’ä¸€èˆ¬ã«ã¯ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã¨å‘¼ã³ã¾ã™ï¼Ž Cè¨€èªžã§ã¯ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã¯ç¿»è¨³å˜ä½ã¨å‘¼ã°ã‚Œï¼Œ ãŠãŠã¾ã‹ã«ã¯ä¸€ã¤ã®ã‚½ãƒ¼ã‚¹ãƒ•ã‚¡ã‚¤ãƒ«
fimbul 2014/11/18
C++

ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°

programming

Cè¨€èªž
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constexprã¨rvalueå‚ç…§å•é¡Œ - ã¨ãã«ã‚ã¶ãªããªã„RiSKã®ãƒ–ãƒã‚°
constexprã¨ãƒ¡ãƒ³ãƒé–¢æ•°ã®å‘¼ã³åˆ†ã‘å•é¡Œ å°ãƒã‚¿ - constexpr ã®æ–‡è„ˆã§constãƒ¡ãƒ³ãƒé–¢æ•°ã¨éžconstãƒ¡ãƒ³ãƒé–¢æ•°ã‚’å‘¼ã³åˆ†ã‘ã‚‹ - ãƒœãƒ¬ãƒæ‘ä¸Š - ENiyGmaA Code ã“ã®ã‚¨ãƒ³ãƒˆãƒªã§æŒ‡æ‘˜ã•ã‚Œã¦ã„ã‚‹ã‚ˆã†ã«ã€constexprã¨ãƒ¡ãƒ³ãƒé–¢æ•°ã®å‘¼ã³åˆ†ã‘å•é¡ŒãŒã‚ã‚Šã¾ã™ã€‚ä¸€æ™‚ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã¯constä¿®é£¾ã•ã‚Œã¦ã„ãªã„ãŸã‚ã«ã€constexprã§ã‚ã‚‹constä¿®é£¾ãƒ¡ãƒ³ãƒé–¢æ•°ãŒå‘¼ã°ã‚Œãªã„ã®ãŒåŽŸå› ã§ã™ã€‚ template<typename T> struct X { T t; T& get() { /* éžconstç‰ˆ */ return t; } constexpr T const& get() const { /* constç‰ˆ */ return t; } }; template<typename T> constexpr auto get(T&& t) -> decltype(
fimbul 2014/07/27
*Tips

C++11

C++
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C++11 tuple implementation details (Part 1)
In his "Variadic Templates are Funadic" talk at GoingNative 2012 Andrei Alexandrescu outlines a "recursive" implementation of std::tuple. He also notes that most implementations arrange tuple members in memory in the "wrong" order, that is, std::tuple<int, double, std::string> will have a memory layout where the std::string comes first and the int comes last. The straightforward recursive implemen
fimbul 2014/07/21
*programming

C++

C++11
ãƒªãƒ³ã‚¯
C++å‹‰å¼·ä¼šinåºƒå³¶ãƒ—ãƒ¬ã‚¼ãƒ³è³‡æ–™
3. è‡ªå·±ç´¹ä»‹ â— åå‰ï¼šåŒ—åŽŸçœŸä¸€ â—‹ HNã¯å—å±±ã¾ã•ã‹ãš â—‹ é¡”æœ¬ã¯æœ¬åã€ãã®ä»–ã¯HN â— æ£²æ¯åœ° â—‹ åºƒå³¶ã¯é”ç•Œ â— ãã®ä»– â—‹ å¹³å‡¡ãªå¤§å¦ç”Ÿ â—‹ C++ã€Haskellã€å¥³å„ªã®èƒ½å¹´çŽ²å¥ˆã•ã‚“ãªã©ã«èˆˆå‘³ãƒ»é–¢å¿ƒ ãŒã‚ã‚Šã¾ã™
fimbul 2014/07/20
C++

Template metaprogramming

TMP
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2. è‡ªå·±ç´¹ä»‹ ãƒãƒ³ãƒ‰ãƒ«ãƒãƒ¼ãƒ alwei Twitter ID @aizen76 alweiã‚‚ã—ãã¯aizenã®ã©ã¡ã‚‰ã‹ã‚’ä½¿ã£ã¦ã„ã¾ã™ æµæµªã®ã‚²ãƒ¼ãƒ ãƒ—ãƒã‚°ãƒ©ãƒž Wiiã€DSã€PSPã€PS3ã€3DSã®ã‚²ãƒ¼ãƒ ã¨ã‹ä½œã£ã¦ãŸ 2Dã‚²ãƒ¼ãƒ å¥½ããªã®ã«ã€å®Ÿã¯3Dã‚²ãƒ¼ãƒ ã—ã‹ä½œã£ãŸã“ã¨ãŒãªã„ æœ€è¿‘è§¦æ‰‹è»å›£ã«ä»²é–“å…¥ã‚Šã—ã¦ã€ã‚ªãƒ³ãƒ©ã‚¤ãƒ³ã‚²ãƒ¼ãƒ ã‚’ä½œã‚Šå§‹ã‚ã¾ã—ãŸ ã‚¢ã‚¸ãƒ£ã‚¤ãƒ«ã¨ã‹TDDã¨ã‹å‹‰å¼·ä¸
fimbul 2014/07/18
ã‚²ãƒ¼ãƒ

C++

programming

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fimbul 2014/07/18
C++

programming

cast
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C++0xã®æ–°æ©Ÿèƒ½ã€finalã¨override
gcc 4.7ã¯ã€finalã¨overrideã‚’å®Ÿè£…ã—ã¦ã„ã‚‹ã€‚ finalã¨ã¯ã€ã‚¯ãƒ©ã‚¹ã®æ´¾ç”Ÿã¨ã€virtualé–¢æ•°ã®ã‚ªãƒ¼ãƒãƒ¼ãƒ©ã‚¤ãƒ‰ã‚’ç¦æ¢ã™ã‚‹ãŸã‚ã®æ©Ÿèƒ½ã§ã‚ã‚‹ã€‚ struct B final { } ; struct D : B { } ; // ã‚¨ãƒ©ãƒ¼ struct C { virtual void f() final { } } ; struct D : C { void f() { } // ã‚¨ãƒ©ãƒ¼ã€C::fã¯ã‚ªãƒ¼ãƒãƒ¼ãƒ©ã‚¤ãƒ‰ã§ããªã„ } ; ã“ã‚Œä»¥ä¸Šèª¬æ˜Žã™ã‚‹å¿…è¦ãŒãªã„ãã‚‰ã„ã«åˆ†ã‹ã‚Šã‚„ã™ã„æ©Ÿèƒ½ã ã€‚ç¾å®Ÿçš„ã«ã¯ã€æœ€åº•è¾ºã®åŸºæœ¬ã‚¯ãƒ©ã‚¹ã®virtualé–¢æ•°ã®ã‚ªãƒ¼ãƒãƒ¼ãƒ©ã‚¤ãƒ‰ã‚’ç¦æ¢ã«ã™ã‚‹ã¨ã„ã†ã“ã¨ã¯ãªã„ã€‚ãªãœãªã‚‰ã°ã€ãã‚Œã¯æ™®é€šã®é–¢æ•°ã¨ã»ã¼ã‹ã‚ã‚Šãªã„ã‹ã‚‰ã ã€‚ã‚ãˆã¦è¨€ãˆã°ã€æ´¾ç”Ÿã‚¯ãƒ©ã‚¹ã§ã€åŒã˜ã‚·ã‚°ãƒãƒãƒ£ã®é–¢æ•°ã‚’å®šç¾©ã§ããªãã™ã‚‹ç¨‹åº¦ã®æ„å‘³ã—ã‹ãªã„ã€‚å¤§æ–¹ã€ä»¥ä¸‹ã®ã‚ˆã†ãªç›®çš„ã«ä½¿ã‚ã‚Œã‚‹ã ã‚ã†ã€‚ struct A {
fimbul 2014/07/17
C++

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override

C++11
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WIESS Paper
fimbul 2014/07/08
C++

Exception Handling
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fimbul 2014/06/07
constexpr

ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ

C++

algorithm

*programming
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fimbul 2014/05/21
C++11

ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°

*design

Move semantics

C++
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fimbul 2014/05/20
C++

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fimbul 2014/05/13
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C++

programming

algorithm

tips
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oÂ mÂ oÂ iÂ kÂ aÂ nÂ e sÂ eÂ rÂ iÂ kÂ a gÂ aÂ lÂ lÂ eÂ rÂ y 2024-08-13 [email protected]
fimbul 2014/05/06
c++

ã‚ªãƒ¢ã‚¤ã‚«ãƒ

programming
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