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Does Qt support virtual pure slots?
...just like regular c++ pure virtual methods. The code generated by MOC does call the pure virtual slots, but that's ok since the base class can't be instantiated anyway...
Again, just like regular c++ pure virtual methods, the class cannot be instantiated until the methods are given an implementatio...
Difference between matches() and find() in Java Regex
...s() is not simply a find() with implied surrounding ^ and $. Be aware that calling .find() more than once may have different results if not preceeded by reset(), while matches() will always return same result. See my answer below.
– L. Holanda
Nov 20 '15 at 22:...
Will Try / Finally (without the Catch) bubble the exception?
... might be thrown in the try block of a try-finally statement higher up the call stack. That is, you can catch the exception in the method that calls the method that contains the try-finally statement, or in the method that calls that method, or in any method in the call stack. If the exception is no...
What is the correct JSON content type?
...coding is UTF-8. (Source: RFC 4627).
For JSONP (runnable JavaScript) with callback:
application/javascript
Here are some blog posts that were mentioned in the relevant comments:
Why you shouldn't use text/html for JSON
Internet Explorer sometimes has issues with application/json
A rather complete...
What is git actually doing when it says it is “resolving deltas”?
...sions are stored as delta-coded files when they are "loose" files. Periodically (either by calling git gc or whenever Git determines it necessary) Git will compress all the "loose" files into a packfile to save space and an index file into that packfile will be created. So zlib will compress with ...
What is the difference between self::$bar and static::$bar in PHP?
... keyword. In this case, your Foo class defines a protected static property called $bar. When you use self in the Foo class to refer to the property, you're referencing the same class.
Therefore if you tried to use self::$bar elsewhere in your Foo class but you had a Bar class with a different value...
Delete/Reset all entries in Core Data?
...
You can still delete the file programmatically, using the NSFileManager:removeItemAtPath:: method.
NSPersistentStore *store = ...;
NSError *error;
NSURL *storeURL = store.URL;
NSPersistentStoreCoordinator *storeCoordinator = ...;
[storeCoordinator removePersistentS...
What does T&& (double ampersand) mean in C++11?
...ue in the draft C++11 standard, but are not true for the final one! Specifically, it says at various points that rvalue references can bind to lvalues, which was once true, but was changed.(e.g. int x; int &&rrx = x; no longer compiles in GCC) – drewbarbs Jul 13 '14 at 16:12
The biggest ...
When does static class initialization happen?
...locks and private static methods used to instantiate private static fields called (in order) at that instant?
3 Answers
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What is “git remote add …” and “git push origin master”?
...w, git is a distributed version control system. Most operations are done locally. To communicate with the outside world, git uses what are called remotes. These are repositories other than the one on your local disk which you can push your changes into (so that other people can see them) or pull fro...