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Writing your own STL Container

...seudo-container I pieced together from § 23.2.1\4 Note that the iterator_category should be one of std::input_iterator_tag, std::output_iterator_tag,std::forward_iterator_tag,std::bidirectional_iterator_tag,std::random_access_iterator_tag. Also note that the below is technically more strict than ...
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Calling C/C++ from Python?

...ed to provide those declaring them as extern "C" extern "C" { Foo* Foo_new(){ return new Foo(); } void Foo_bar(Foo* foo){ foo->bar(); } } Next you have to compile this to a shared library g++ -c -fPIC foo.cpp -o foo.o g++ -shared -Wl,-soname,libfoo.so -o libfoo.so foo.o And finally...
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Difference between Role and GrantedAuthority in Spring Security

...hat says that a role is a GrantedAuthority that starts with the prefix ROLE_. There's nothing more. A role is just a GrantedAuthority - a "permission" - a "right". You see a lot of places in spring security where the role with its ROLE_ prefix is handled specially as e.g. in the RoleVoter, where the...
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Python Requests and persistent sessions

...ith your requests as you would: s.post('https://localhost/login.py', login_data) #logged in! cookies saved for future requests. r2 = s.get('https://localhost/profile_data.json', ...) #cookies sent automatically! #do whatever, s will keep your cookies intact :) For more about sessions: https://req...
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PHP abstract properties

...cks (say, in the constructor) for the $tablename variable, e.g.: class Foo_Abstract { public final function __construct(/*whatever*/) { if(!isset($this->tablename)) throw new LogicException(get_class($this) . ' must have a $tablename'); } } To enforce this for all derived classes...
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How to create a video from images with FFmpeg?

...utput framerate ffmpeg -r 1/5 -i img%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4 Alternatively the format video filter can be added to the filter chain to replace -pix_fmt yuv420p like "fps=25,format=yuv420p". The advantage of this method is that you can control which filter goes...
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How to measure time in milliseconds using ANSI C?

...on many systems. You can use this function like this: struct timeval tval_before, tval_after, tval_result; gettimeofday(&tval_before, NULL); // Some code you want to time, for example: sleep(1); gettimeofday(&tval_after, NULL); timersub(&tval_after, &tval_before, &tval_resu...
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PHP - include a php file and also send query parameters

... Also note: $_GET will be the same for all included files. So if that is where your query parameters are stored, it will still see them. Also note: it is not the function, in a class. – Jonathon Apr...
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How do I raise the same Exception with a custom message in Python?

...Note that you can add whatever you like to err. For example err.problematic_array=[1,2,3]. Edit: @Ducan points in a comment the above does not work with python 3 since .message is not a member of ValueError. Instead you could use this (valid python 2.6 or later or 3.x): try: try: raise...
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