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Uniq by object attribute in Ruby
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The hash method is better if you want to group by say album_id while (say) summing up num_plays.
– thekingoftruth
Sep 13 '13 at 22:59
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How can I reorder my divs using only CSS?
Given a template where the HTML cannot be modified because of other requirements, how is it possible to display (rearrange) a div above another div when they are not in that order in the HTML? Both div s contain data that varies in height and width.
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What's the best way to detect a 'touch screen' device using JavaScript?
...uery plug-in that's for use on both desktop and mobile devices. I wondered if there is a way with JavaScript to detect if the device has touch screen capability. I'm using jquery-mobile.js to detect the touch screen events and it works on iOS, Android etc., but I'd also like to write conditional sta...
Send POST request using NSURLSession
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@sendoa , if you know how to how to upload a image along with thr "plain" data? i need the solution urgent. many thanks in advance
– Gagan Joshi
Jul 24 '14 at 12:27
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How do I format a Microsoft JSON date?
...: Both methods (the replace function and this answer) would have to change if MS changes the format.
– Roy Tinker
Aug 25 '10 at 16:11
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Does BroadcastReceiver.onReceive always run in the UI thread?
... Context.registerReceiver . I also have an AsyncTask that dispatches notifier-Intents via Context.sendBroadcast . The intents are sent from a non-UI worker thread, but it seems that BroadcastReceiver.onReceive (which receives said Intents) always runs in the UI thread (which is good for me). I...
What happens with constraints when a view is removed
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The constraints are removed. If you add A again, you will have to make new constraints for it, or if you save the constraints before you remove A, you can add them back. When I do something like this, I save the constraints like this for a view called vi...
In Hibernate Validator 4.1+, what is the difference between @NotNull, @NotEmpty, and @NotBlank?
I can't seem to be able to find a summary that distinguishes the difference between these three annotations.
3 Answers
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Programmatically change log level in Log4j2
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EDITED to reflect changes in the API introduced in Log4j2 version 2.0.2
If you wish to change the root logger level, do something like this :
LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
Configuration config = ctx.getConfiguration();
LoggerConfig loggerConfig = config.getLog...
How to change the remote a branch is tracking?
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If the remote tracking branch does not yet exists but an existing remote tracking branch is currently tracked, it can not be changed to the in-existent new remote tracking branch. You need to unset the current remote tracking...