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C++对象布局及多态探索之菱形结构虚继承 - C/C++ - 清泛网 - 专注C/C++及内核技术
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{
C041() : c_(0x01) {}
virtual void foo() { c_ = 0x02; }
char c_;
};
struct C100 : public virtual C041
{
C100() : c_(0x02) {}
char c_;
};
struct C101 : public virtual C041
{
C101() : c_(0x03) {}
char c_;
};
struct C110 : public C100, public C101
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Is there any difference between the `:key => “value”` and `key: “value”` hash notations?
Is there any difference between :key => "value" (hashrocket) and key: "value" (Ruby 1.9) notations?
5 Answers
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How do I convert seconds to hours, minutes and seconds?
I have a function that returns information in seconds, but I need to store that information in hours:minutes:seconds.
12 An...
Rails Object to hash
I have the following object that has been created
10 Answers
10
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How to get my IP address programmatically on iOS/macOS?
I would like to obtain my iPad's IP address programmatically.
How can I query the networking subsystem to find out what my IPv4 (and IPv6) addresses are?
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How to change Hash values?
I'd like to replace each value in a hash with value.some_method .
12 Answers
12
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Get Slightly Lighter and Darker Color from UIColor
I was looking to be able to turn any UIColor into a gradient. The way I am intending to do this is by using Core Graphics to draw a gradient. What I am trying to do is to get a color, lets say:
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How to include another XHTML in XHTML using JSF 2.0 Facelets?
What is the most correct way to include another XHTML page in an XHTML page? I have been trying different ways, none of them are working.
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How can you debug a CORS request with cURL?
How can you debug CORS requests using cURL? So far I couldn't find any way to "simulate" the preflight request .
4 Answers
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Performing user authentication in Java EE / JSF using j_security_check
I'm wondering what the current approach is regarding user authentication for a web application making use of JSF 2.0 (and if any components do exist) and Java EE 6 core mechanisms (login/check permissions/logouts) with user information hold in a JPA entity. The Oracle Java EE tutorial is a bit spars...