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vertical divider between two columns in bootstrap

I am using twitter bootstrap, and have a row which has two columns (span6). How do I create a vertical divider between both the spans. ...
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How to store standard error in a variable

... the error file thus: ERROR=$(</tmp/Error) The shell recognizes this and doesn't have to run 'cat' to get the data. The bigger question is hard. I don't think there's an easy way to do it. You'd have to build the entire pipeline into the sub-shell, eventually sending its final standard outp...
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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...
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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 2 ...
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capturing self strongly in this block is likely to lead to a retain cycle

... __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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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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Dashed line border around UIView

... 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...
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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

... OK, found the problem. I upgraded Ruby some time ago and blasted away a whole load of gems. Solution: sudo gem install cocoapods share | improve this answer | ...
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JavaFX Application Icon

... 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...