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Why java.lang.Object is not abstract? [duplicate]
...e argued that some of the methods would benefit from this. Take hashCode() and equals() for instance, there would probably have been a lot less frustration around the complexities of these two if they had both been made abstract. This would require developers to figure out how they should be impleme...
What regular expression will match valid international phone numbers?
...rmat for matching a generic international phone number. I replaced the US land line centric international access code 011 with the standard international access code identifier of '+', making it mandatory. I also changed the minimum for the national number to at least one digit.
Note that if you en...
Real mouse position in canvas [duplicate]
....clientY - rect.top
};
}
Just call it from your event with the event and canvas as arguments. It returns an object with x and y for the mouse positions.
As the mouse position you are getting is relative to the client window you'll have to subtract the position of the canvas element to convert...
Resize svg when window is resized in d3.js
...he help of this question :
Get the size of the screen, current web page and browser window
7 Answers
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What is the purpose of setting a key in data.table?
I am using data.table and there are many functions which require me to set a key (e.g. X[Y] ). As such, I wish to understand what a key does in order to properly set keys in my data tables.
...
Homebrew install specific version of formula?
...en two installed versions. (*)
If you have been using homebrew for longer and never removed older versions (using, for example brew cleanup), chances are that some older version of your program may still be around. If you want to simply activate that previous version, brew switch is the easiest way...
Creating a comma separated list from IList or IEnumerable
...ll string.Join. Of course, you don't have to use a helper method:
// C# 3 and .NET 3.5 way:
string joined = string.Join(",", strings.ToArray());
// C# 2 and .NET 2.0 way:
string joined = string.Join(",", new List<string>(strings).ToArray());
The latter is a bit of a mouthful though :)
This...
Will the base class constructor be automatically called?
...e -> Most Derived.
So in your particular instance, it calls Person(), and then Customer() in the constructor orders. The reason why you need to sometimes use the base constructor is when the constructors below the current type need additional parameters. For example:
public class Base
{
p...
What do < and > stand for?
I know that the entities &lt; and &gt; are used for < and > , but I am curious what these names stand for.
...
Is there a way to reduce the size of the git folder?
Seems like my project is getting bigger and bigger with every git commit/push . Is there a way to clean up my git folder?
...