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How does the Amazon Recommendation feature work?
...the data the better the model - and Amazon is BIG. I can only imagine how fun it is to play with models with that much data in a commerce driven site. Now many of those algorithms (like the predictor that started out in commerce server) have moved on to live directly within Microsoft SQL.
The fou...
How do I add custom field to Python log format string?
...getLogger('Test')
if __name__=='__main__':
logger.logMessage('ERROR','123','This is an error')
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What REALLY happens when you don't free after malloc?
... being used).
I heard a story about some guy who wrote some code just for fun to make his hardware work better. He said "just a hobby, won't be big and professional". Years later lots of people are using his "hobby" code.
s...
How do pointer to pointers work in C?
...act two-dimensional, since strings are character arrays. Hence: char **.
A function f will need to accept an argument of type t ** if it is to alter a variable of type t *.
Many other reasons that are too numerous to list here.
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Deleting an element from an array in PHP
...y wiki
17 revs, 11 users 32%Rizier123
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How efficient is locking an unlocked mutex? What is the cost of a mutex?
... it again.
The program that I used to investigate this can be found here:
https://github.com/CarloWood/ai-statefultask-testsuite/blob/b69b112e2e91d35b56a39f41809d3e3de2f9e4b8/src/mutex_test.cxx
Note that it has a few hardcoded values specific for my box (xrange, yrange and rdtsc overhead), so you ...
What is the optimal algorithm for the game 2048?
...s within reach!
You can try the AI for yourself. The code is available at https://github.com/nneonneo/2048-ai.
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Performance surprise with “as” and nullable types
...sible boxed enum types. The JIT compiler generates a call to a CLR helper function named JIT_Unbox_Nullable to get the job done. This is a general purpose function for any value type, lots of code there to check types. And the value is copied. Hard to estimate the cost since this code is locked ...
Is ServiceLocator an anti-pattern?
...you tried to get parallel tests working with static dependencies? It's not fun.
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How to use the toString method in Java?
...t<Bank>();
Bank b1 = new Bank("naseem1", "Darbhanga,bihar", 123, 1000);
Bank b2 = new Bank("naseem2", "patna,bihar", 124, 1500);
Bank b3 = new Bank("naseem3", "madhubani,bihar", 125, 1600);
Bank b4 = new Bank("naseem4", "samastipur,bihar", 126, 1700);
B...