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How can I check if an element exists in the visible DOM?
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@ButtleButkus Read the actual question. That solution you used doesn't make sense as getElementById() will return a reference to a DOM element or null, therefore, using typeof (especially on the RHS) is wrong (if it weren't defined, the LH...
Strip Leading and Trailing Spaces From Java String
...with all leading and trailing whitespace removed. The javadoc for the same reads :
/**
* Returns a string whose value is this string, with all leading
* and trailing {@link Character#isWhitespace(int) white space}
* removed.
* <p>
* If this {@code String} object represents an empty strin...
Center content in responsive bootstrap navbar
... centering my content in the bootstrap navbar. I'm using bootstrap 3. I've read many posts, but the CSS or methods used will not work with my code! I'm really frustrated, so this is like my last option. Any help would be appreciated!
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Usages of Null / Nothing / Unit in Scala
I've just read: http://oldfashionedsoftware.com/2008/08/20/a-post-about-nothing/
8 Answers
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How do I return rows with a specific value first?
... stupid to process equivalency tests" is simply wrong. If at all it should read: "does not support MySQL's implicit casting of boolean true to the value 1 (one)."
– a_horse_with_no_name
Sep 25 '13 at 15:02
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Why do we check up to the square root of a prime number to determine if it is prime?
...refore, a = 1 and b = n and hence By definition, N is prime.
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Further reading if you are not satisfied:
Many different combinations of (a, b) may be possible. Let's say they are:
(a1, b1), (a2, b2), (a3, b3), ..... , (ak, bk). Without loss of generality, assume ai < bi, 1<= i <=k.
N...
How does '20 seconds' work in Scala?
...ing it! Implicit conversions get used quite a lot in Scala. If you're just reading the text file, it could be confusing ("where does that method come from") but with appropriate tool support you should be able to find your way around, at which point Scala can be beautifully meaningful and concise. (...
How to tell if browser/tab is active [duplicate]
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I've read elsewhere that onmousemove could be a viable replacement for focus.
– Michael Robinson
Sep 19 '12 at 6:15
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How do I force git to use LF instead of CR+LF under windows?
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By now the .gitattributes lines should read: *.txt text eol=lf as per git-scm.com/docs/gitattributes
– grandchild
Jan 9 at 16:41
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When should I release objects in -(void)viewDidUnload rather than in -dealloc?
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In addition to what has already been indicated, I wanted to elaborate more about logic behind -viewDidUnload.
One of the most important reasons for implementing it is that UIViewController subclasses commonly also contain owning references to vario...