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How do I use valgrind to find memory leaks?

...l heap blocks were freed -- no leaks are possible ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0) ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0) I have a leak, but WHERE? So, you have a memory leak, and Valgrind isn't saying anything meaningful. Perhaps, somethi...
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What are the performance characteristics of sqlite with very large database files? [closed]

...at is the approach being taken though when the sqlite db has to be rebuilt from scratch, the indexes are created after all the inserts are done. – Snazzer May 28 '10 at 17:22 25 ...
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Cannot import the keyfile 'blah.pfx' - error 'The keyfile may be password protected'

...look like sn -i companyname.pfx VS_KEY_3E185446540E7F7A This must be run from the location of your PFX file, if you have the solution loaded in VS 2010 you can simply right click on the pfx file from the solution explorer and choose Open Command Prompt which will launch the .net 2010 cmd prompt to...
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How to make a class JSON serializable

...wn custom serialization. For a trivial example, see below. >>> from json import JSONEncoder >>> class MyEncoder(JSONEncoder): def default(self, o): return o.__dict__ >>> MyEncoder().encode(f) '{"fname": "/foo/bar"}' Then you pass this class in...
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How to sort objects by multiple keys in Python?

...egated column need not be a number. def multikeysort(items, columns): from operator import itemgetter comparers = [((itemgetter(col[1:].strip()), -1) if col.startswith('-') else (itemgetter(col.strip()), 1)) for col in columns] def comparer(left, right): for fn...
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How to find the Git commit that introduced a string in any branch?

... or removed the fixed string whatever. The --all parameter means to start from every branch and --source means to show which of those branches led to finding that commit. It's often useful to add -p to show the patches that each of those commits would introduce as well. Versions of git since 1.7....
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How do I set environment variables from Java?

How do I set environment variables from Java? I see that I can do this for subprocesses using ProcessBuilder . I have several subprocesses to start, though, so I'd rather modify the current process's environment and let the subprocesses inherit it. ...
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How do I pass parameters into a PHP script through a webpage?

...2']; ?> If you want the script to run regardless of where you call it from (command line or from the browser) you'll want something like the following: EDIT: as pointed out by Cthulhu in the comments, the most direct way to test which environment you're executing in is to use the PHP_SAPI cons...
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What are the key differences between Apache Thrift, Google Protocol Buffers, MessagePack, ASN.1 and

... tutorials available as well. Thrift is not a standard. It is originally from Facebook and was later open-sourced and is currently a top level Apache project. It is not well-documented -- especially tutorial levels -- and to my (admittedly brief) glance doesn't appear to add anything that other, ...
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Android Facebook integration with invalid key hash

In one of my apps I need to get data from Facebook... I am doing this: 25 Answers 25 ...