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In C++, what is a virtual base class?
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Virtual base classes, used in virtual inheritance, is a way of preventing multiple "instances" of a given class appearing in an inheritance hierarchy when using multiple inheritance.
Consider the following scenario:
class A { public: void Foo() {} };
class B : public A {};
class C : ...
Why does the C# compiler go mad on this nested LINQ query?
Try to compile following code and you'll find that compiler takes >3 GB of RAM (all free memory on my machine) and very long time to compile (actually I get IO exception after 10 minutes).
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Is there a link to GitHub for downloading a file in the latest release of a repository?
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3
Documented on help.github.com/en/articles/linking-to-releases: If you'd like to link directly to a download of your latest release asset you...
Add UIPickerView & a Button in Action sheet - How?
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edited May 23 '17 at 12:30
Community♦
111 silver badge
answered Oct 2 '13 at 3:09
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What does the constant 0.0039215689 represent?
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383
0.0039215689 is approximately equal to 1/255.
Seeing that this is OpenGL, performance is prob...
C++ 读写xml方法整理（持续更新） - C/C++ - 清泛网 - 专注C/C++及内核技术
...h，一个.cpp，绿色小巧，直接加入工程源码编译，只支持MFC。
<?xml version="1.0" encoding="utf-8"?>
<root>
<update ver="1.2.0" pkg="setup.exe" force="1"/>
<update ver="1.1.1" pkg="setup.exe" force="0"/>
<update ver="1.1.0" pkg="setup.exe" force="0"/>
</root>
CMarkup...
Does functional programming replace GoF design patterns?
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1083
The blog post you quoted overstates its claim a bit. FP doesn't eliminate the need for design pa...
How to make a valid Windows filename from an arbitrary string?
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Gabber
4,20155 gold badges3131 silver badges4747 bronze badges
answered Mar 6 '09 at 22:09
Diego JancicDiego Jancic
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How can you use an object's property in a double-quoted string?
...-quoted string, you have to enclose that subexpression in $():
$foo = 1,2,3
"$foo[1]" # yields "1 2 3[1]"
"$($foo[1])" # yields "2"
$bar = "abc"
"$bar.Length" # yields "abc.Length"
"$($bar.Length)" # yields "3"
PowerShell only expands variables in those cases, nothing more. To force eval...
What's the difference between Ruby's dup and clone methods?
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edited Apr 30 '16 at 22:58
answered Apr 17 '12 at 0:24
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