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PHP: Convert any string to UTF-8 without knowing the original character set, or at least try

...t mb_detect_encoding source code in your php distro (somewhere here: ext/mbstring/libmbfl/mbfl/mbfl_ident.c). This function does not work properly at all. For some encodings it even has "return true", lol. Others are in Ctrl+c Ctrl+v functions. That's because you can not detect encoding without some...
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Set custom HTML5 required field validation message

...for example when it's not a valid email address) You can either assign a string or a function to each of the three properties. If you assign a function, it can accept a reference to the input element (DOM node) and it must return a string which is then displayed as the error message. Compatibili...
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Iterating each character in a string using Python

In C++, I can iterate over an std::string like this: 8 Answers 8 ...
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Why does HTML5 form-validation allow emails without a dot?

...ould have a ^, denoting it should start matching from the beginning of the string and also accept upper case: ^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]+$ – Kohjah Breese Dec 6 '18 at 14:18 ...
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C++使用OLE/COM高速读写EXCEL的源码 - C/C++ - 清泛网 - 专注C/C++及内核技术

...l(BOOL bShow); ///检查一个CELL是否是字符串 //BOOL IsCellString(long iRow, long iColumn); ///检查一个CELL是否是数值 //BOOL IsCellInt(long iRow, long iColumn); void SetCell(long irow, long icolumn,CString new_string); ///得到一个CELL的String CString GetC...
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C# Sanitize File Name

... To clean up a file name you could do this private static string MakeValidFileName( string name ) { string invalidChars = System.Text.RegularExpressions.Regex.Escape( new string( System.IO.Path.GetInvalidFileNameChars() ) ); string invalidRegStr = string.Format( @"([{0}]*\.+$)...
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What is the memory consumption of an object in Java?

...uld I use a 32- or a 64-bit JVM?, 2012, JDK 1.7) Boxed types, arrays, and strings Boxed wrappers have overhead compared to primitive types (from JavaWorld): Integer: The 16-byte result is a little worse than I expected because an int value can fit into just 4 extra bytes. Using an Integer c...
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How to construct a std::string from a std::vector?

Short of (the obvious) building a C style string first then using that to create a std::string, is there a quicker/alternative/"better" way to initialize a string from a vector of chars? ...
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static constructors in C++? I need to initialize private static objects

... a class with a private static data member (a vector that contains all the characters a-z). In java or C#, I can just make a "static constructor" that will run before I make any instances of the class, and sets up the static data members of the class. It only gets run once (as the variables are read...
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Build an ASCII chart of the most commonly used words in a given text [closed]

...in its hardware control and measurement niche, but really pretty awful for string manipulation. – Joe Z Jul 4 '10 at 6:23 ...