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App Inventor 2 拓展参考文档 · App Inventor 2 中文网

...制数据 【数据库】LeanDB 数据库扩展 【数据库】MySQL + php后端数据库 【数据库】MongoDB + php后端数据库 切换 目录 提交反馈 ...
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Does a `+` in a URL scheme/host/path represent a space?

... To get a literal + to be received by the back end (or, at least PHP) it has to be triple encoded: %25252B – Umbrella Sep 30 '15 at 15:01 11 ...
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“No X11 DISPLAY variable” - what does it mean?

...ror. Download this app xming: http://sourceforge.net/project/downloading.php? Install, then use settings on this link: http://www.geo.mtu.edu/geoschem/docs/putty_install.html or follow this steps: Installing/Configuring PuTTy and Xming Once PuTTy and Xming have been downloaded to the PC, insta...
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Why can templates only be implemented in the header file?

...at would add overhead such as boxing, needing to pass function pointers to allocators and constructors, etc. The intention of C++ templates is to avoid having to write nearly identical class MyClass_int, class MyClass_float, etc, but to still be able to end up with compiled code that is mostly as if...
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Tool to track #include dependencies [closed]

...IncludeManager" from ProFactor. http://www.profactor.co.uk/includemanager.php There's a free trial, and it is awesome. It's a plug-in for Visual Studio that's totally integrated so double clicking on something over here takes you to the place where it is included over there. Tooltip mouseovers g...
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What is the difference between List (of T) and Collection(of T)?

...ted in some discussion on why this might be. Maybe the list is better with allocating memory. – Ray Dec 29 '08 at 23:55 10 ...
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How do I prevent site scraping? [closed]

...icles are served from a URL which looks something like example.com/article.php?articleId=12345. This (and similar things) which will allow scrapers to simply iterate over all the articleIds and request all the articles that way. There are other ways to eventually find all the articles, such as by wr...
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stringstream, string, and char* conversion confusion

...the temporary string const, because any changes to it might cause it to re-allocate and thus render cstr invalid. It is therefor safer to not to store the result of the call to str() at all and use cstr only until the end of the full expression: use_c_str( stringstream.str().c_str() ); Of course,...
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Unit Testing bash scripts

...f the test harness for Perl but now has implementations in C, C++, Python, PHP, Perl, Java, JavaScript, and others. bats-core share | improve this answer | follow ...
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Is it feasible to do (serious) web development in Lisp? [closed]

... stand-alone server. Various HTML generation solutions are available, from PHP-style templates to Lisp macro hacks to XSLT. Just take your pick. HTML-TEMPLATE is one example. Closure XML is available for XML parsing, serialization, XPath 1.0, XSLT 1.0. There is also Closure HTML for HTML tag soup ...