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Lua简明教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ble来管理全局变量的，Lua把这些全局变量放在了一个叫“_G”的Table里。
我们可以用如下的方式来访问一个全局变量（假设我们这个全局变量名叫globalVar）：
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_G.globalVar
_G["globalVar"]
我们可...
What are the differences between a multidimensional array and an array of arrays in C#?
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edited Jul 22 '14 at 6:01
Gabriel Rodriguez
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answered Feb 28...
How to change the type of a field?
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edited Feb 22 '18 at 8:01
user6039980
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C++ equivalent of java's instanceof
...omething();
}
This requires your compiler to have rtti support enabled.
EDIT:
I've had some good comments on this answer!
Every time you need to use a dynamic_cast (or instanceof) you'd better ask yourself whether it's a necessary thing. It's generally a sign of poor design.
Typical workaround...
boost::flat_map and its performance compared to map and unordered_map
...pod=yes
typeid=struct MediumTypePod . sizeof=184 . ispod=yes
Insertion
EDIT:
My previous results included a bug: they actually tested ordered insertion, which exhibited a very fast behavior for the flat maps.
I left those results later down this page because they are interesting.
This is the co...
How do I call setattr() on the current module?
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edited May 29 '10 at 16:03
answered May 29 '10 at 2:11
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Installing Java 7 on Ubuntu
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edited Feb 3 '18 at 15:55
answered Apr 28 '13 at 14:03
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Is there a MySQL option/feature to track history of changes to records?
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edited Apr 10 '18 at 11:24
Octavian Catusanu
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Fast Bitmap Blur For Android SDK
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edited May 8 '19 at 9:36
answered Apr 5 '12 at 12:06
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C++ Lock-free Hazard Pointer（冒险指针） - C/C++ - 清泛网 - 专注C/C++及内核技术
C++ Lock-free Hazard Pointer（冒险指针）hazard_pointer1 Safe Reclamation MethodsFolly 的 Hazard Pointer 实现中有一段注释，详细描述了 C++ 里几种主流的安全内存回收方法，列表如下：优点缺点场景Locking易用读高开销
1. Safe Reclamation Methods
Fo...