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Virtual Memory Usage from Java under Linux, too much memory used

... This has been a long-standing complaint with Java, but it's largely meaningless, and usually based on looking at the wrong information. The usual phrasing is something like "Hello World on Java takes 10 megabytes! Why does it need that?" Well, here...
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git pull fails “unable to resolve reference” “unable to update local ref”

...remote prune origin man git-gc(1): git-gc - Cleanup unnecessary files and optimize the local repository git gc [--aggressive] [--auto] [--quiet] [--prune=<date> | --no-prune] Runs a number of housekeeping tasks within the current repository, such as compressing file revisions ...
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How do I find the time difference between two datetime objects in python?

...nly holds the difference. In the example above it is 0 minutes, 8 seconds and 562000 microseconds. share | improve this answer | follow | ...
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How do I use a custom Serializer with Jackson?

...er to extend org.codehaus.jackson.map.ser.SerializerBase as it will have standard implementations of non-essential methods (i.e. everything but actual serialization call). share | improve this answe...
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How to write to a file in Scala?

...gement. Edit (September 2011): since Eduardo Costa asks about Scala2.9, and since Rick-777 comments that scalax.IO commit history is pretty much non-existent since mid-2009... Scala-IO has changed place: see its GitHub repo, from Jesse Eichar (also on SO): The Scala IO umbrella project consi...
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Parse query string in JavaScript [duplicate]

... Here is a fast and easy way of parsing query strings in JavaScript: function getQueryVariable(variable) { var query = window.location.search.substring(1); var vars = query.split('&'); for (var i = 0; i < vars.length; i++...
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Checkout another branch when there are uncommitted changes on the current branch

... Git version 2.13, to fix up some problems with the arguments to git stash and allow for new options. Both do the same thing, when used in the basic ways. You can stop reading here, if you like! If Git won't let you switch, you already have a remedy: use git stash or git commit; or, if your chan...
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Get the correct week number of a given date

I have Googled a lot and found a lot of solutions, but none of them give me the correct week number for the 2012-12-31. Even the example on MSDN ( link ) fails. ...
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What does the C++ standard state the size of int, long type to be?

...es. I know that it depends on the architecture (16 bits, 32 bits, 64 bits) and the compiler. 24 Answers ...
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Why do people use __(double underscore) so much in C++

I was having a look through some open source C++ code and notice a lot of double under scores where used in the code, mainly at the start of variable names. ...