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What does the ^ operator do in Java?
What function does the ^ (caret) operator serve in Java?
17 Answers
17
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Binding multiple events to a listener (without JQuery)?
While working with browser events, I've started incorporating Safari's touchEvents for mobile devices. I find that addEventListener s are stacking up with conditionals. This project can't use JQuery.
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How to get row from R data.frame
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x[r,]
where r is the row you're interested in. Try this, for example:
#Add your data
x <- structure(list(A = c(5, 3.5, 3.25, 4.25, 1.5 ),
B = c(4.25, 4, 4, 4.5, 4.5 ),
C = c(4.5, 2.5, 4, 2.25, 3 )
),
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RSpec: how to test if a method was called?
...g RSpec tests, I find myself writing a lot of code that looks like this in order to ensure that a method was called during the execution of a test (for the sake of argument, let's just say I can't really interrogate the state of the object after the call because the operation the method performs is ...
Force Screen On
How do I force the screen to stay active and not shut off while my app is running?
3 Answers
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What's wrong with overridable method calls in constructors?
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On invoking overridable method from constructors
Simply put, this is wrong because it unnecessarily opens up possibilities to MANY bugs. When the @Override is invoked, the state of the object may be inconsistent and/or incomplete.
A quote from Effective Java 2nd Editi...
Maintain aspect ratio of div but fill screen width and height in CSS?
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Use the new CSS viewport units vw and vh (viewport width / viewport height)
FIDDLE
Resize vertically and horizontally and you'll see that the element will always fill the maximum viewport size without breaking the ratio and without scrollbars!
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Get Image Height and Width as integer values?
...ght) = getimagesize('path_to_image');
Make sure that:
You specify the correct image path there
The image has read access
Chmod image dir to 755
Also try to prefix path with $_SERVER["DOCUMENT_ROOT"], this helps sometimes when you are not able to read files.
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What are the best Haskell libraries to operationalize a program? [closed]
...ram into production, there are several things I need that program to do in order to consider it "operationalized" – that is, running and maintainable in a measurable and verifiable way by both engineers and operations staff. For my purposes, an operationalized program must:
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How do I measure execution time of a command on the Windows command line?
...re using Windows 2003 (note that windows server 2008 and later are not supported) you can use The Windows Server 2003 Resource Kit, which contains timeit.exe that displays detailed execution stats. Here is an example, timing the command "timeit -?":
C:\>timeit timeit -?
Invalid switch -?
Usage: ...