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GCC dump preprocessor defines

...ture. Recommendations for their corresponding macro names are published at https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations. But: g++ -dM -E - < /dev/null | fgrep __cpp_alias_templates always fails, because it silently invokes the C-drivers (as if invoked by gcc...
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Best practices for in-app database migration for Sqlite

... easy way to update existing tables in-place. See the documentation here: http://www.sqlite.org/lang_altertable.html. For deleting columns or other changes that aren't supported by the "ALTER TABLE" syntax, I create a new table, migrate date into it, drop the old table, and rename the new table to...
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How can I create a self-signed cert for localhost?

I've gone through the steps detailed in How do you use https / SSL on localhost? but this sets up a self-signed cert for my machine name, and when browsing it via https://localhost I receive the IE warning. ...
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vs2008编译boost详细步骤 - 开源 & Github - 清泛网 - 专注C/C++及内核技术

...tp1 准备工作】: (1)Boost 下载可以到官方网站下载: http://www.boost.org/ (2)安装VS2008 IDE 【Setp2 编译Boost】 1.打开Visual Studio 2008 命令提示窗口 2.进入D:\05_Computer\04_3rdPatry\02Boost\boost_1_44_0\boost_1_44_0\tools\jam\src 3.执行 build....
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Why does an image captured using camera intent gets rotated on some devices on Android?

...e to use ExifInterface to get the orientation because an Android OS issue: https://code.google.com/p/android/issues/detail?id=19268 And here is calculateInSampleSize /** * Calculate an inSampleSize for use in a {@link BitmapFactory.Options} object when decoding * bitmaps using the decode* method...
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Merge Images Side by Side(Horizontally)

...eUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
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Call a Javascript function every 5 seconds continuously [duplicate]

... Good working example here: http://jsfiddle.net/MrTest/t4NXD/62/ Plus: has nice fade in / fade out animation will pause on :hover will prevent running multiple actions (finish run animation before starting second) will prevent going broken when in th...
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What is in your Mathematica tool bag? [closed]

...rated above, or a self-contained remote request such as an SQL query or an HTTP operation. You might try setting up a Python REPL web app (like this) and interacting with it using Import, or perhaps starting up an external Python process and communicating through its streams (e.g. using a Java Proc...
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Why is __init__() always called after __new__()?

....number Agent("a") is Agent("a") == True I used this page as a resource http://infohost.nmt.edu/tcc/help/pubs/python/web/new-new-method.html share | improve this answer | ...
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Automatic Retina images for web sites

... <img src="low-res.jpg" srcset="high-res.jpg 2x"> Browser Support: http://caniuse.com/#search=srcset Other Resources: WebKit release post W3C documentation for srcset good explanation about why and how to use srcset Chris Coyer's post for more good info ...