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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 do I execute a program from Python? os.system fails due to spaces in path
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Here's a different way of doing it.
If you're using Windows the following acts like double-clicking the file in Explorer, or giving the file name as an argument to the DOS "start" command: the file is opened with whatever application ...
Android set height and width of Custom view programmatically
...graphView.setLayoutParams(new LayoutParams(width, height));
This is fine if you know the exact size of the view. However, if you want a more flexible approach, you can override the onMeasure() method to measure the view more precisely depending on the space available and layout constraints (wrap_c...
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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lose vim colorscheme in tmux mode
...have set in vim does not show up. Only the color scheme I've set in iterm. If I run vim from shell the colorscheme appears correct - its only when I'm in tmux mode.
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Java - removing first character of a string
...ers of the old string except the first one. There's no way to actually modify a string.
– Chris Dodd
Sep 7 '16 at 23:07
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Get column index from column name in python pandas
...he list of columns to get index for:
[df.columns.get_loc(c) for c in cols if c in df]
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How to prevent blank xmlns attributes in output from .NET's XmlDocument?
...(which puts it in no namespace) won't be added to it when it's serialised. If you need refreshing on how namespaces work, have a look at jclark.com/xml/xmlns.htm
– JeniT
Sep 26 '08 at 8:25
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How to delete a localStorage item when the browser window/tab is closed?
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If it works, you can technically use it. But considering removeItem is provided as a member function, it seems logical to use it rather than running into potentially undefined behavior using a separate operator.
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Move an item inside a list?
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Alternatively, you can use a slice notation:
l[index:index] = [item]
If you want to move an item that's already in the list to the specified position, you would have to delete it and insert it at the new position:
l.insert(newindex, l.pop(oldindex))
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