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Count character occurrences in a string in C++

...heck if c equals '_' If yes, increase count EDIT: C++ example code: int count_underscores(string s) { int count = 0; for (int i = 0; i < s.size(); i++) if (s[i] == '_') count++; return count; } Note that this is code to use together with std::string, if you're using char*, re...
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For every character in string

... A for loop can be implemented like this: string str("HELLO"); for (int i = 0; i < str.size(); i++){ cout << str[i]; } This will print the string character by character. str[i] returns character at index i. If it is a character array: char str[6] = "hello"; for (int i = 0; st...
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Does hosts file exist on the iPhone? How to change it? [closed]

...'t work. Then i tried to change encoding settings, and got it! You have to convert your host file to ANSI in Notepad++ before you save it. For whom failed to get the host file working; click "Convert to ANSI" under "Encoding" menu. – trkaplan Sep 26 '10 at 12:1...
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What is 'Pattern Matching' in functional languages?

...-like functional languages allow you define simple data types called "disjoint unions" or "algebraic data types". These data structures are simple containers, and can be recursively defined. For example: type 'a list = | Nil | Cons of 'a * 'a list defines a stack-like data structure. Thin...
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Why can lambdas be better optimized by the compiler than plain functions?

...l. For functions, on the other hand, the old caveat applies: a function pointer gets passed to the function template, and compilers traditionally have a lot of problems inlining calls via function pointers. They can theoretically be inlined, but only if the surrounding function is inlined as well. ...
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How can I transform between the two styles of public key format, one “BEGIN RSA PUBLIC KEY”, the oth

...then becomes how do we want to store these numbers in a computer. First we convert both to hexadecimal: Modulus: EB506399F5C612F5A67A09C1192B92FAB53DB28520D859CE0EF6B7D83D40AA1C1DCE2C0720D15A0F531595CAD81BA5D129F91CC6769719F1435872C4BCD0521150A0263B470066489B918BFCA03CE8A0E9FC2C0314C4B096EA30717C0...
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Unicode Processing in C++

...n 22.4.1.4 "Class template codecvt" - discusses the codecvt class used for converting between character encodings (including UTF-8, UTF-16 and UTF-32). There is more about Unicode support peppered throughout the document, but these seem to be the most critical sections on the subject. ...
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How to check if an object is an array?

...ts a list of strings, or a single string. If it's a string, then I want to convert it to an array with just the one item so I can loop over it without fear of an error. ...
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Test if string is a number in Ruby on Rails

...ited Jul 3 '15 at 11:44 Joshua Pinter 34k1717 gold badges188188 silver badges208208 bronze badges answered Apr 14 '11 at 10:13 ...
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Disable scrolling in webview?

...verflow scrolling of elements on the page, this could be needed for proper interaction depending on the site. 3. The JS touchmove event. @GDanger has the correct answer which is overriding the overScrollBy by extending the WebView as it has no otherside effects, just prevents page scrolling. stackov...