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Flattening a shallow list in Python [duplicate]
Is there a simple way to flatten a list of iterables with a list comprehension, or failing that, what would you all consider to be the best way to flatten a shallow list like this, balancing performance and readability?
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How can I fill out a Python string with spaces?
... @simon 's answer is more flexible and more useful when formatting more complex strings
– CoatedMoose
Jul 27 '13 at 7:08
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Random record from MongoDB
...or older versions (previous answer)
This was actually a feature request: http://jira.mongodb.org/browse/SERVER-533 but it was filed under "Won't fix."
The cookbook has a very good recipe to select a random document out of a collection: http://cookbook.mongodb.org/patterns/random-attribute/
To p...
How do I flush the cin buffer?
...your code isn't going to be portable.
See Using fflush(stdin).
Also, see http://ubuntuforums.org/showpost.php?s=9129c7bd6e5c8fd67eb332126b59b54c&p=452568&postcount=1 for an alternative.
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Optimistic vs. Pessimistic locking
...ed Serializable. This is because reads and writes are executed in separate HTTP requests, hence on different database transactions.
So, optimistic locking can help you prevent Lost Updates even when using application-level transactions that incorporate the user-think time as well.
For more deta...
Stopwatch vs. using System.DateTime.Now for timing events [duplicate]
...gh for precision to the second probably but anything beyond that I would recommend StopWatch.
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Get most recent file in a directory on Linux
Looking for a command that will return the single most recent file in a directory.
21 Answers
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How do I uninstall a package installed using npm link?
...dis
To reinstall from your package.json:
npm unlink redis
npm install
https://www.tachyonstemplates.com/npm-cheat-sheet/#unlinking-a-npm-package-from-an-application
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How to find time complexity of an algorithm
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This is an excellent article :
http://www.daniweb.com/software-development/computer-science/threads/13488/time-complexity-of-algorithm
The below answer is copied from above (in case the excellent link goes bust)
The most common metric for calculating tim...
Python - Passing a function into another function
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