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Using Node.js only vs. using Node.js with Apache/Nginx
...pared to using a proper static file web server (Node may also be faster in select scenarios, but this is unlikely to be the norm). On top of files serving more efficiently, you won't have to worry about handling eTags or cache control headers the way you would if you were servings things out of Node...
Index on multiple columns in Ruby on Rails
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The order does matter in indexing.
Put the most selective field first, i.e. the field that narrows down the number of rows fastest.
The index will only be used insofar as you use its columns in sequence starting at the beginning. i.e. if you index on [:user_id, :article_id...
BLE 低功耗蓝牙调试助手：扫描、连接、读写、订阅通知（附 .aia 源码） · ...
...低功耗蓝牙1.ConnectWithAddress(设备地址表[列表显示框_设备.SelectionIndex])
}
连接后列出特征，并判断能读、能写、能通知
DeviceCharacteristics 是「[服务UUID, 特征UUID, 名称]」三元组的列表。Connected 事件在服务发现完...
Reset/remove CSS styles for element only
...ion: unset;
user-focus: unset;
user-input: unset;
user-modify: unset;
user-select: unset;
vector-effect: unset;
vertical-align: unset;
visibility: unset;
white-space: unset;
width: unset;
will-change: unset;
window-dragging: unset;
word-break: unset;
word-spacing: unset;
word-wrap: unset;
writing-mo...
Git: Discard all changes on a diverged local branch
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Dan Moulding's answer is safer. I think you should select that one.
– Daniel Apt
Jul 20 '15 at 10:34
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How to use ? : if statements with Razor and inline code blocks
... should work:
<span class="vote-up@(puzzle.UserVote == VoteType.Up ? "-selected" : "")">Vote Up</span>
share
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improve this answer
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follow
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How to Detect if I'm Compiling Code with a particular Visual Studio version?
... @thomthom : This macro exactly reflects the Toolset version used by the selected target of the build project. Or more distinct: Project->Properties->General->Platform Toolset.
– Yamakuzure
Nov 30 '17 at 11:57
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Django - filtering on foreign key properties
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Is this going to hit the DB twice, should I be using select_related() to make this more optimal?
– Fraser Graham
Dec 30 '09 at 22:52
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What is in your .vimrc? [closed]
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is there any way to select from more colors?
– Fzs2
Aug 13 '10 at 10:13
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boost::flat_map and its performance compared to map and unordered_map
...tion for these cases, using partial template specializations, or SFINAE to select algorithms according to traits of T.
About the flat map
Apparently the flat map is a sorted vector wrapper, like Loki AssocVector, but with some supplementary modernizations coming with C++11, exploiting move semanti...