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Can you write virtual functions / methods in Java?
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I wonded if it's really true, because for what I've read, in Java, dynamic method dispatch happens only for the object the method is called on - as explained here so the example explaining virtual functions for C++ here is not valid for java.
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How do I move a Git branch out into its own repository?
....g.
git push url://to/new/repository.git branch-to-move:new-branch-name
For a new repository, new-branch-name is typically master.
Creating a new, empty repository can be done with git init.
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How to copy part of an array to another array in C#?
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Note that LINQ is not ideal when dealing with performance-critical situations
– XD face me
Dec 27 '15 at 19:15
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Default value of BOOL
... x; // <--- no default value
It is initialized to garbage.
However, for a BOOL ivar, it will be initialized to NO, as the whole instance is filled with 0 on initialization.
(Note: When ARC is enabled, local object pointers will always be have a default value nil, but local variables of non-o...
List distinct values in a vector in R
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Thanks for contributing an answer to Stack Overflow!Please be sure to answer the question. Provide details and share your research!But avoid …Asking for help, clarification, or responding to other answers.Making statements based o...
MySQL/SQL: Group by date only on a Datetime column
... GROUP BY DateOnly;
Though I don't think it'll make any difference to performance, it is a little clearer.
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difference between Product Backlog Item and Feature in Team Foundation work item types
...g the Scrum process template. The TFS site has published some very brief information about Product Backlog Items and Features and the idea behind creating a new work item type. http://www.visualstudio.com/en-us/news/2013-jun-3-vso.aspx
The difference between the two comes down to what granularity y...
How can I make a weak protocol reference in 'pure' Swift (without @objc)
...ProtocolNameDelegate?
}
Using AnyObject you say that only classes can conform to this protocol, whereas structs or enums can't.
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Why is \r a newline for Vim?
From question How to replace a character for a newline in Vim? . You have to use \r when replacing text for a newline, like this
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What does -D_XOPEN_SOURCE do/mean?
...SOURCE=<some number>
it tells your compiler to include definitions for some extra functions that are defined in the X/Open and POSIX standards.
This will give you some extra functionality that exists on most recent UNIX/BSD/Linux systems, but probably doesn't exist on other systems such as ...