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Random alpha-numeric string in JavaScript? [duplicate]

...on) to generate a random alpha-numeric (uppercase, lowercase, and numbers) string in JavaScript to use as a probably-unique identifier? ...
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Are the days of passing const std::string & as a parameter over?

...Herb Sutter who suggested that the reasons to pass std::vector and std::string by const & are largely gone. He suggested that writing a function such as the following is now preferable: ...
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Concatenate two string literals

...Koenig. He writes that "the new idea is that we can use + to concatenate a string and a string literal - or, for that matter, two strings (but not two string literals). ...
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How to change string into QString?

... If by string you mean std::string you can do it with this method: QString QString::fromStdString(const std::string & str) std::string str = "Hello world"; QString qstr = QString::fromStdString(str); If by string you mean ...
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Get first n characters of a string

How can I get the first n characters of a string in PHP? What's the fastest way to trim a string to a specific number of characters, and append '...' if needed? ...
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Can a class member function template be virtual?

...using MinGW G++ 3.4.5 on Window 7: #include <iostream> #include <string> using namespace std; template <typename T> class A{ public: virtual void func1(const T& p) { cout<<"A:"<<p<<endl; } }; template <typename T> class B : public...
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How to convert number to words in java

... I don't think there is any method in SE. It basically converts number to string and parses String and associates it with the weight for example 1000 1 is treated as thousand position and 1 gets mapped to "one" and thousand because of position This is the code from the website: English impo...
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What's the best way to trim std::string?

I'm currently using the following code to right-trim all the std::strings in my programs: 46 Answers ...
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How do I remove all non alphanumeric characters from a string except dash?

How do I remove all non alphanumeric characters from a string except dash and space characters? 13 Answers ...
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How can I validate a string to only allow alphanumeric characters in it?

How can I validate a string using Regular Expressions to only allow alphanumeric characters in it? 10 Answers ...