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What is the difference between C++ and Visual C++? [duplicate]
...C++ programs tend to be more maintainable (If the programmers are striving for maintainability, that is).
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Why would I ever use push_back instead of emplace_back?
...ies on compiler optimizations to avoid copies, emplace_back uses perfect forwarding to send the arguments directly to the constructor to create an object in-place. It seems to me that emplace_back does everything push_back can do, but some of the time it will do it better (but never worse).
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Detecting taps on attributed text in a UITextView in iOS
...appable, such that when they are tapped I get called back so that I can perform an action. I realise that UITextView can detect taps on a URL and call back my delegate, but these aren't URLs.
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How can I index a MATLAB array returned by a function without first assigning it to a local variable
For example, if I want to read the middle value from magic(5) , I can do so like this:
9 Answers
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Waiting until two async blocks are executed before starting another block
... using GCD, we want to wait until two async blocks are executed and done before moving on to the next steps of execution. What is the best way to do that?
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How to write a Unit Test?
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Define the expected and desired output for a normal case, with correct input.
Now, implement the test by declaring a class, name it anything (Usually something like TestAddingModule), and add the testAdd method to it (i.e. like the one below) :
Write a method,...
Static Indexers?
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+1 for Malfist's comment. Just because it uses "this" for an instance indexer doesn't mean they couldn't come up with other syntax.
– Jon Skeet
Dec 30 '08 at 20:19
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MFC RadioButton用法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...件定义Control变量或Value变量，每组只能定义一个）
BOOL m_Radio1;//对应于组 1 1
BOOL m_Radio3; //对应于组 2 1
BOOL m_Radio7; //对应于组 3 1
BOOL m_Radio9; //对应于组 4 1
CButton m_RBtGroup1; //对应于组 1 1
CButton m_RBtGroup2;...
Unix command-line JSON parser? [closed]
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If you're looking for a portable C compiled tool:
http://stedolan.github.com/jq/
From the website:
jq is like sed for JSON data - you can use it to slice and filter and map and transform structured data with the same ease that sed, awk, ...
What is the Swift equivalent of respondsToSelector?
...I could do if ( [obj respondsToSelector:@selector(setSomeVar:)] ) { ... } for a someVar property. Does it work the same way with vars in Swift?
– Alejandro Iván
Dec 17 '15 at 15:13
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