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C++ project organisation (with gtest, cmake and doxygen)

...rs are the basis for users to interact with what you offer and must be installed. This means they have to be in a subdirectory (no-one wants lots of headers ending up in top-level /usr/include/) and your headers must be able to include themselves with such a setup. └── prj ├── inclu...
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Understanding slice notation

... It's pretty simple really: a[start:stop] # items start through stop-1 a[start:] # items start through the rest of the array a[:stop] # items from the beginning through stop-1 a[:] # a copy of the whole array There is also...
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“is” operator behaves unexpectedly with integers

...3): The current implementation keeps an array of integer objects for all integers between -5 and 256, when you create an int in that range you actually just get back a reference to the existing object. So it should be possible to change the value of 1. I suspect the behaviour of Py...
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Find running median from a stream of integers

...based solution works is explained below: For the first two elements add smaller one to the maxHeap on the left, and bigger one to the minHeap on the right. Then process stream data one by one, Step 1: Add next item to one of the heaps if next item is smaller than maxHeap root add it to maxHea...
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Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?

... in the branch prediction table moving the branch eliminated the alias and allowed the branch to be predicted correctly Your Core2 doesn't keep a separate history record for each conditional jump. Instead it keeps a shared history of all conditional jumps. One disadvantage of global branch predic...
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How can I get the MAC and the IP address of a connected client in PHP?

... address, you could parse the output of netstat -ie in Linux, or ipconfig /all in Windows. Client IP address You can get the client IP from $_SERVER['REMOTE_ADDR'] Client MAC address The client MAC address will not be available to you except in one special circumstance: if the client is on the s...
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Efficient way to apply multiple filters to pandas DataFrame or Series

...s to apply several filters to a Pandas DataFrame or Series object. Essentially, I want to efficiently chain a bunch of filtering (comparison operations) together that are specified at run-time by the user. ...
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What is the curiously recurring template pattern (CRTP)?

... curiously recurring, isn't it? :) Now, what does this give you? This actually gives the X template the ability to be a base class for its specializations. For example, you could make a generic singleton class (simplified version) like this template <class ActualClass> class Singleton { ...
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How do I set a conditional breakpoint in gdb, when char* x points to a string whose value equals “he

... This method can have side effects. $_streq method from @tlwhitec is better. – rools Apr 14 '19 at 14:08 add a comment ...
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How to compile python script to binary executable

... Or use PyInstaller as an alternative to py2exe. Here is a good starting point. PyInstaller also lets you create executables for linux and mac... Here is how one could fairly easily use PyInstaller to solve the issue at hand: pyinstall...