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Is there any difference between “!=” and “” in Oracle Sql?
...re are any differences in between the two not equal operators <> and != in Oracle.
4 Answers
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What's an appropriate HTTP status code to return by a REST API service for a validation failure?
...ad Request). For instance if the URI is supposed to have an ISO-8601 date and you find that it's in the wrong format or refers to February 31st, then you would return an HTTP 400. Ditto if you expect well-formed XML in an entity body and it fails to parse.
(1/2016): Over the last five years WebDA...
JavaFX Application Icon
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Assuming your stage is "stage" and the file is on the filesystem:
stage.getIcons().add(new Image("file:icon.png"));
As per the comment below, if it's wrapped in a containing jar you'll need to use the following approach instead:
stage.getIcons().add(ne...
Opacity CSS not working in IE8
... i.e. when you hover over the trigger text the cursor changes to a pointer and the opacity of the trigger text is reduced to indicate that the text has a click action.
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pod install -bash: pod: command not found
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OK, found the problem. I upgraded Ruby some time ago and blasted away a whole load of gems. Solution:
sudo gem install cocoapods
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Dashed line border around UIView
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You can set the border with this pattern using Layer and Bezier path like below examples.
Objective-C
CAShapeLayer *yourViewBorder = [CAShapeLayer layer];
yourViewBorder.strokeColor = [UIColor blackColor].CGColor;
yourViewBorder.fillColor = nil;
yourViewBorder.lineDashPattern...
Octave-Gnuplot-AquaTerm error: set terminal aqua enhanced title “Figure 1”…unknown terminal type"
I've installed Octave and gnuplot via Homebrew, and downloaded AquaTerm.dmg.
When I try to plot, I get the following message:
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capturing self strongly in this block is likely to lead to a retain cycle
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__weak MyClass *self_ = self; // that's enough
self.loadingDidFinishHandler = ^(NSArray *receivedItems, NSError *error){
if (!error) {
[self_ showAlertWithError:error];
} else {
self_.items = [NSArray arrayWithArray:receivedItems];
[self_.tableView reloadData];
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Are Java static calls more or less expensive than non-static calls?
...ful to know they are at least as fast, if not faster than instance methods and should not be ruled out on a performance basis.
– Will
Oct 21 '17 at 13:11
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Fastest sort of fixed length 6 int array
...'s always best to test, test, test. I would try at least sorting networks and insertion sort. If I were betting, I'd put my money on insertion sort based on past experience.
Do you know anything about the input data? Some algorithms will perform better with certain kinds of data. For example, i...