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Removing colors from output

...hould probably be (m|K) or [mK], because you're not trying to match a pipe character. But that's not important right now.) If you switch that final match in your command to [mGK] or (m|G|K), you should be able to catch that extra control sequence. ./somescript | sed -r "s/\x1B\[([0-9]{1,3}(;[0-9]{...
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How exactly does the callstack work?

... pointer arithmetic. Example #include <iostream> int main() { char c = std::cin.get(); std::cout << c; } gcc.godbolt.org gives us main: pushq %rbp movq %rsp, %rbp subq $16, %rsp movl std::cin, %edi call std::basic_istream<char, std::cha...
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reference assignment is atomic so why is Interlocked.Exchange(ref Object, Object) needed?

...ces: "Reads and writes of the following data types are atomic: bool, char, byte, sbyte, short, ushort, uint, int, float, and reference types." So, you can write to the volatile reference without risk of getting a corrupted value. You should of course be careful with how you decide which...
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How does this program work?

...oat is converted to double, as the prototype of printf is int printf(const char*, ...), from 6.5.2.2/7, The ellipsis notation in a function prototype declarator causes argument type conversion to stop after the last declared parameter. The default argument promotions are performed on trailing ar...
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How to find out what type of a Mat object is with Mat::type() in OpenCV

...n" functionality like Visual Studio you can type cv::CV_8U right-click and select Go to Definition to open the file where cv::CV_8U is defined which is types_c.h. – user3731622 Aug 29 '16 at 17:53 ...
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Format date and time in a Windows batch script

...ces with zeros. Short explanation of how substrings work: %VARIABLE:~num_chars_to_skip,num_chars_to_keep% So to get just the year from a date like "29.03.2018" use: %DATE:~6,4% ^-----skip 6 characters ^---keep 4 characters ...
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How do I remove code duplication between similar const and non-const member functions?

...780321334879. Here's Meyers' solution (simplified): struct C { const char & get() const { return c; } char & get() { return const_cast<char &>(static_cast<const C &>(*this).get()); } char c; }; The two casts and function call may be ugly but it's c...
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C++: What is the size of an object of an empty class?

...aligned on a word boundary (such as an integer). For example, if you place char x; int y; inside the class, my GCC clocks it at eight bytes (since the second int must be aligned in that implementation). share | ...
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Tab key == 4 spaces and auto-indent after curly braces in Vim

... if I enable expandtab, is there a way to actually input the tab character in the text anyway? – Daniele Segato Mar 16 '16 at 10:47 3 ...
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Scanner vs. BufferedReader

As far I know, the two most common methods of reading character-based data from a file in Java is using Scanner or BufferedReader . I also know that the BufferedReader reads files efficiently by using a buffer to avoid physical disk operations. ...