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How to count the number o<em>fem> set bits in a 32-bit integer?
...(like x86's popcnt, on CPUs where it's supported) will almost certainly be <em>fem>astest. Some other architectures may have a slow instruction implemented with a microcoded loop that tests a bit per cycle (citation needed).
A pre-populated table lookup method can be very <em>fem>ast i<em>fem> your CPU has a large cach...
In C++, what is a virtual base class?
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Virtual base classes, used in virtual inheritance, is a way o<em>fem> preventing multiple "instances" o<em>fem> a given class appearing in an inheritance hierarchy when using multiple inheritance.
Consider the <em>fem>ollowing scenario:
class A { public: void <em>Fem>oo() {} };
class B : public A {};
class C : ...
Spring @PropertySource using YAML
Spring Boot allows us to replace our application.properties <em>fem>iles with YAML equivalents. However I seem to hit a snag with my tests. I<em>fem> I annotate my TestCon<em>fem>iguration (a simple Java con<em>fem>ig), it is expecting a properties <em>fem>ile.
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Android and setting width and height programmatically in dp units
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You'll have to convert it <em>fem>rom dps to pixels using the display scale <em>fem>actor.
<em>fem>inal <em>fem>loat scale = getContext().getResources().getDisplayMetrics().density;
int pixels = (int) (dps * scale + 0.5<em>fem>);
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How to go to a speci<em>fem>ic <em>fem>ile in Chrome Developer Tools?
I am developing a web application with a heavy <em>fem>ront-end approach. By using Dojo and the AMD-way, I currently have testing screens which may easily load over a hundred di<em>fem><em>fem>erent javascript <em>fem>iles.
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How to uncompress a tar.gz in another directory
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You can use the option -C (or --directory i<em>fem> you pre<em>fem>er long options) to give the target directory o<em>fem> your choice in case you are using the Gnu version o<em>fem> tar. The directory should exist:
mkdir <em>fem>oo
tar -xz<em>fem> bar.tar.gz -C <em>fem>oo
I<em>fem> you are not using a tar capable o<em>fem> e...
Emacs: print key binding <em>fem>or a command or list all key bindings
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C-h <em>fem> (or M-x describe-<em>fem>unction) will show you the bindings <em>fem>or a command.
You are correct, C-h b (or M-x describe-bindings) will show you all bindings. C-h m (M-x describe-mode) is also handy to list bindings by mode.
You migh...
How to <em>fem>ind SQL Server running port?
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Django rest <em>fem>ramework, use di<em>fem><em>fem>erent serializers in the same ModelViewSet
I would like to provide two di<em>fem><em>fem>erent serializers and yet be able to bene<em>fem>it <em>fem>rom all the <em>fem>acilities o<em>fem> ModelViewSet :
6 A...
GI<em>Fem> Animated 扩展：可点击透明背景动画GI<em>Fem>播放器 · App Inventor 2 中文网
... 搜索 GI<em>Fem> Animated 扩展：可点击透明背景动画GI<em>Fem>播放器
GI<em>Fem> Animated 扩展
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