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Callback functions in C++

... for jumping, the engine can call game_core_instance.update_keybind(newly_selected_key, &player_jump); and thus change the behaviour of a call to key_pressed (which the calls player_jump) once this button is pressed the next time ingame. What are callables in C++(11)? See C++ concepts: Call...
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How can I get a file's size in C++? [duplicate]

... #include <fstream> std::ifstream::pos_type filesize(const char* filename) { std::ifstream in(filename, std::ifstream::ate | std::ifstream::binary); return in.tellg(); } See http://www.cplusplus.com/doc/tutorial/files/ for more information on files in C++. edit: this answ...
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Why is it slower to iterate over a small string than a small list?

...string took longer than doing the same operation on a list of small single character strings. Any explanation? It's almost 1.35 times as much time. ...
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What is the default initialization of an array in Java?

...t is a 0. For float/double that is a 0.0 For booleans that is a false. For char that is the null character '\u0000' (whose decimal equivalent is 0). When you create an array of something, all entries are also zeroed. So your array contains five zeros right after it is created by new. Note (based...
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Boost.Asio的简单使用(Timer,Thread,Io_service类) - C/C++ - 清泛网 - 专注C/C++及内核技术

...I标准发送数据。) using boost::asio::ip::tcp; int main(int argc, char* argv[]) { try { if (argc != 2) { std::cerr << "Usage: client <host>" << std::endl; return 1; } 用asio进行网络连接至少需要一个boost::asi...
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How can I get a JavaScript stack trace when I throw an exception?

...trace() { function st2(f) { return !f ? [] : st2(f.caller).concat([f.toString().split('(')[0].substring(9) + '(' + f.arguments.join(',') + ')']); } return st2(arguments.callee.caller); } share |...
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Is there a method for String conversion to Title Case?

...StringBuilder(input.length()); boolean nextTitleCase = true; for (char c : input.toCharArray()) { if (Character.isSpaceChar(c)) { nextTitleCase = true; } else if (nextTitleCase) { c = Character.toTitleCase(c); nextTitleCase = false; ...
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How can I efficiently select a Standard Library container in C++11?

... }, onDemand: true, discardSelector: ".discard-answer" ,immediatelyShowMarkdownHelp:true,enableSnippets:true }); } }); ...
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multiple prints on the same line in Python

... You should use backspace '\r' or ('\x08') char to go back on previous position in console output Python 2+: import time import sys def backspace(n): sys.stdout.write((b'\x08' * n).decode()) # use \x08 char to go back for i in range(101): ...
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What are transparent comparators?

...ast, works for std::string which has overloaded less than operators taking char const* as argument. Since these function objects are also new, even if they do the wrong thing (i.e. require a conversion for some type) it would, at least, not be a silent change resulting in a performance degradation. ...