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Equivalent C++ to Python generator pattern

...signed, unsigned>; using reference = value_type const&; using pointer = value_type const*; using difference_type = ptrdiff_t; // C++03 (explicit aliases) typedef std::input_iterator_tag iterator_category; typedef std::pair<unsigned, unsigned> value_type; typedef value_typ...
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One-liner to check whether an iterator yields at least one element?

... iterator in case any_check ever needs to advance. This is worse than just converting the original iterator to a list. – Rafał Dowgird Mar 3 '11 at 8:54 1 ...
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What does “O(1) access time” mean?

...ill take twice the time. You probably don't want to put a million objects into one of these. share | improve this answer | follow | ...
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Number of lines in a file in Java

...s(). Just for fun, linux' wc -l command takes 0.15 seconds. public static int countLinesOld(String filename) throws IOException { InputStream is = new BufferedInputStream(new FileInputStream(filename)); try { byte[] c = new byte[1024]; int count = 0; int readChars = ...
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How to get the last date of a particular month with JodaTime?

...t when I was looking for this. If someone needs the actual last day as an int instead using JodaTime you can do this: public static final int JANUARY = 1; public static final int DECEMBER = 12; public static final int FIRST_OF_THE_MONTH = 1; public final int getLastDayOfMonth(final int month, f...
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Variable number of arguments in C++?

...on it called va_start(), va_arg() and va_end(). #include<stdarg.h> int maxof(int n_args, ...) { va_list ap; va_start(ap, n_args); int max = va_arg(ap, int); for(int i = 2; i <= n_args; i++) { int a = va_arg(ap, int); if(a > max) max = a; } va_end...
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How can I pad an int with leading zeros when using cout

I want cout to output an int with leading zeros, so the value 1 would be printed as 001 and the value 25 printed as 025 . How can I do this? ...
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Where and why do I have to put the “template” and “typename” keywords?

... a line of code does. In C++, the above however can yield vastly different interpretations depending on what t means. If it's a type, then it will be a declaration of a pointer f. However if it's not a type, it will be a multiplication. So the C++ Standard says at paragraph (3/7): Some names den...
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Splitting a string into chunks of a certain size

... static IEnumerable<string> Split(string str, int chunkSize) { return Enumerable.Range(0, str.Length / chunkSize) .Select(i => str.Substring(i * chunkSize, chunkSize)); } Please note that additional code might be required to gracefully handle edge cases ...
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Best way to hide a window from the Alt-Tab program switcher?

...g to @donovan, modern days WPF supports this natively, through setting ShowInTaskbar="False" and Visibility="Hidden" in the XAML. (I haven't tested this yet, but nevertheless decided to bump the comment visibility) Original answer: There are two ways of hiding a window from the task switcher in Win3...