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Hashing a file in Python
...essly create bytes objects in memory, and call read too many or too little times. This will map the file directly into the virtual memory, and hash it from there - the operating system can map the file contents directly from the buffer cache into the reading process. This means this could be faster ...
Difference between DateTime and Time in Ruby
What's the difference between DateTime and Time classes in Ruby and what factors would cause me to choose one or the other?
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How to install Boost on Ubuntu
...ings such as PO Edit 2.0 require boost 1.6, which is not available at this time via apt-get you can get this from boost.org/users/history/version_1_60_0.html and then expand it. Follow the excellent instructions above, remembering that LD Library Path is not the same as $PATH
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Default value in Go's method
...is is done on purpose to enhance readability, at the cost of a little more time (and, hopefully, thought) on the writer's end.
I think the proper approach to having a "default" is to have a new function which supplies that default to the more generic function. Having this, your code becomes clearer...
What is a coroutine?
...n parallel. Coroutines, on the other hand, are collaborative: at any given time, a program with coroutines is running only one of its coroutines, and this running coroutine suspends its execution only when it explicitly requests to be suspended.
So the point is: Coroutines are "collaborative". E...
Calculate relative time in C#
Given a specific DateTime value, how do I display relative time, like:
37 Answers
37...
C# Convert List to Dictionary
...out in the comments, this will fail if an item exists in the list multiple times.
Depending on your specific requirements, you can either use var dict = list.Distinct().ToDictionary(x => x); to get a dictionary of distinct items or you can use ToLookup instead:
var dict = list.ToLookup(x => x...
Generate random numbers following a normal distribution in C/C++
...ting approximately Gaussian noise for audio and image processing with real-time constraints - if there's a way of achieving this in fewer clock cycles then that could be very useful.
– Paul R
Sep 11 '12 at 4:58
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Best way to use PHP to encrypt and decrypt passwords? [duplicate]
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Bad sample; two times random for IV, not using IV at all because of ECB, using ECB encoding in the first place, not using AES compatible code, not padding the message correctly. Yes, it works in the same sense that the random number generato...
Using vagrant to run virtual machines with desktop environment
...d:
sudo apt-get install xfce4
sudo startxfce4&
If this is the first time you're running this Ubuntu environment, you'll need to run the following command before installing xfce4:
sudo apt-get update
That's it, you should be landed in a xfce4 session.
Update: For a better experience, I re...