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Why there is no ConcurrentHashSet against ConcurrentHashMap
...map (or map class).
Prior to Java 8, you produce a concurrent hash set backed by a concurrent hash map, by using Collections.newSetFromMap(map)
In Java 8 (pointed out by @Matt), you can get a concurrent hash set view via ConcurrentHashMap.newKeySet(). This is a bit simpler than the old newSetFromM...
How do I get the function name inside a function in PHP?
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totymedli
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answered Jun 17 '09 at 10:33
SilfverstromSi...
Simple regular expression for a decimal with a precision of 2
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Valid regex tokens vary by implementation. A generic form is:
[0-9]+(\.[0-9][0-9]?)?
More compact:
\d+(\.\d{1,2})?
Both assume that both have at least one digit before and one after the decimal place.
To require that the whole strin...
How to add a right button to a UINavigationController?
...d it still might be quite a while before it displays, no point in doing work early and tying up memory.
- (void)viewDidLoad {
[super viewDidLoad];
UIBarButtonItem *anotherButton = [[UIBarButtonItem alloc] initWithTitle:@"Show" style:UIBarButtonItemStylePlain target:self action:@selector(refres...
Is there a better way to iterate over two lists, getting one element from each list for each iterati
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Roberto BonvalletRoberto Bonvallet
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How do I create delegates in Objective-C?
I know how delegates work, and I know how I can use them.
19 Answers
19
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How do I remove  from the beginning of a file?
I have a CSS file that looks fine when I open it using gedit , but when it's read by PHP (to merge all the CSS files into one), this CSS has the following characters prepended to it: 
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Saving image from PHP URL
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Andrew
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answered Apr 7 '09 at 7:15
vartecvartec
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In Matlab, when is it optimal to use bsxfun?
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There are three reasons I use bsxfun (documentation, blog link)
bsxfun is faster than repmat (see below)
bsxfun requires less typing
Using bsxfun, like using accumarray, makes me feel good about my understanding of Matlab.
bsxfun will replicate the input arrays along their "singlet...
Equation for testing if a point is inside a circle
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jasonjason
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