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List of Big-O for PHP functions
After using PHP for a while now, I've noticed that not all built-in PHP functions are as fast as expected. Consider these two possible implementations of a function that finds if a number is prime using a cached array of primes.
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Client-server synchronization pattern / algorithm?
I have a feeling that there must be client-server synchronization patterns out there. But i totally failed to google up one.
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What is the meaning of “non temporal” memory accesses in x86
...is a somewhat low-level question. In x86 assembly there are two SSE instructions:
3 Answers
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What is private bytes, virtual bytes, working set?
...am trying to use the perfmon windows utility to debug memory leaks in a process.
4 Answers
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Redis strings vs Redis hashes to represent JSON: efficiency?
I want to store a JSON payload into redis. There's really 2 ways I can do this:
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Print a string as hex bytes?
...is string: Hello world !! and I want to print it using Python as 48:65:6c:6c:6f:20:77:6f:72:6c:64:20:21:21 .
13 Answers
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Asserting successive calls to a mock method
Mock has a helpful assert_called_with() method . However, as far as I understand this only checks the last call to a method.
If I have code that calls the mocked method 3 times successively, each time with different parameters, how can I assert these 3 calls with their specific parameters?
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multi-layer perceptron (MLP) architecture: criteria for choosing number of hidden layers and size of
If we have 10 eigenvectors then we can have 10 neural nodes in input layer.If we have 5 output classes then we can have 5 nodes in output layer.But what is the criteria for choosing number of hidden layer in a MLP and how many neural nodes in 1 hidden layer?
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How to remove all callbacks from a Handler?
I have a Handler from my sub-Activity that was called by the main Activity . This Handler is used by sub-classes to postDelay some Runnables, and I can't manage them. Now, in the onStop event, I need to remove them before finishing the Activity (somehow I called finish() , but it still call ...
Best way to replace multiple characters in a string?
I need to replace some characters as follows: & ➔ \& , # ➔ \# , ...
13 Answers
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