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Where is Erlang used and why? [closed]

...ng in its SMS and authentication systems. • Motorola is using Erlang in call processing products in the public-safety industry. • Ericsson uses Erlang in its support nodes, used in GPRS and 3G mobile networks worldwide. The most popular open source Erlang applications include the following: •...
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Select between two dates with Django

... Use the __range operator: ...filter(current_issue__isnull=True, created_at__range=(start_date, end_date)) share | improve this an...
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When should I use C++14 automatic return type deduction?

...tatement boundaries we make types explicit, within expressions they are usually implicit but we can make them explicit with casts". C++11 and C++1y introduce type deduction tools so that you can leave out the type in new places. Sorry, but you're not going to solve this up front by making general r...
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How to intercept touches events on a MKMapView or UIWebView objects?

...lot of hackish programming that imperfectly duplicates Apple's code, especially in the case of multitouch. Here's what I do: Implement a gesture recognizer that cannot be prevented and that cannot prevent other gesture recognizers. Add it to the map view, and then use the gestureRecognizer's touc...
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How to maintain aspect ratio using HTML IMG tag

... The size is fixed, the aspect ratio is not, as the question was specifically about any image of any resolution. Including resolutions smaller than 64x64. – Koenigsberg Jul 31 '18 at 8:50 ...
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How do you disable the unused variable warnings coming out of gcc in 3rd party code I do not wish to

...ut the stuff you have no control over. For example, instead of -IC:\\boost_1_52_0, say -isystem C:\\boost_1_52_0. Hope it helps. Good Luck! share | improve this answer | fo...
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AfxGetMainWnd函数解惑 - C/C++ - 清泛网 - 专注C/C++及内核技术

...时也会失灵。不信, 你测试一下下面的代码: unsigned __stdcall SecondThreadFunc( void* pArguments ) { CMainFrame* pMainWnd = (CMainFrame*)AfxGetMainWnd(); if (NULL!=pMainWnd) { CView *pView = pMainWnd->GetActiveView(); if (NULL...
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Discuz菜单栏下面广告怎么弄? - 更多技术 - 清泛网 - 专注C/C++及内核技术

... class="z dzfbr"> <a href="http://zz.comsenz.com/2010zz/" target="_blank" class="xw1">2010第五届中国互联网站长年会</a> <em class="xg2">自强·求变,跨界实践绿色增长</em> <em><a href="http://www.discuz.net/thread-1591466-1-1.html" target="_blank">火...
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Discuz开启帖子快速回复,设置无效 - 更多技术 - 清泛网 - 专注C/C++及内核技术

Discuz开启帖子快速回复,设置无效 source module forum forum_viewthread.php$fastpost = $_G['setting']['fastpost'] && !$_G['forum_thread'...\source\module\forum\forum_viewthread.php $fastpost = $_G['setting']['fastpost'] && !$_G['forum_thread']['archiveid'] && ($_G['forum']['status'...
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CPU指令集avx程序无法运行,运行崩溃 - C/C++ - 清泛网 - 专注C/C++及内核技术

CPU指令集avx程序无法运行,运行崩溃cpu_avx_run原因就是CPU不支持相应的指令集导致的。Linux上使用 lscpu 命令查看CPU指令集,看是否支持。比如_mm256_cmpeq_epi64 这个函数需要avx2指令集,但是CPU不支持,就导致程序崩溃起不来。原因...