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Most efficient way to make the first character of a String lower case?

... are operations per second, the more the better. Tests test1 was first Andy's and Hllink's approach: string = Character.toLowerCase(string.charAt(0)) + string.substring(1); test2 was second Andy's approach. It is also Introspector.decapitalize() suggested by Daniel, but without two if statemen...
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What's the difference between std::move and std::forward

... std::move takes an object and allows you to treat it as a temporary (an rvalue). Although it isn't a semantic requirement, typically a function accepting a reference to an rvalue will invalidate it. When you see std::move, it indicates that the value ...
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What's the difference between require and require-dev? [duplicate]

I'm new to the composer and I would like to know the difference between require and require-dev . The composer website doesn't offer a good explanation the difference between these two. ...
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Delete keychain items when an app is uninstalled

I am using idandersen's scifihifi-iphone code for keychain and save password using 8 Answers ...
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Combining two Series into a DataFrame in pandas

I have two Series s1 and s2 with the same (non-consecutive) indices. How do I combine s1 and s2 to being two columns in a DataFrame and keep one of the indices as a third column? ...
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Why are C# interface methods not declared abstract or virtual?

C# methods in interfaces are declared without using the virtual keyword, and overridden in the derived class without using the override keyword. ...
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How is std::function implemented?

...ed by the compiler creating a class with overloaded function call operator and the referenced variables as members. This suggests that the size of lambda expressions varies, and given enough references variables that size can be arbitrarily large . ...
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Convert .pem to .crt and .key

Can anyone tell me the correct way/command to extract/convert the certificate .crt and private key .key files from a .pem file? I just read they are interchangable, but not how. ...
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Passing variables through handlebars partial

I'm currently dealing with handlebars.js in an express.js application. To keep things modular, I split all my templates in partials. ...
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Google Maps: Auto close open InfoWindows?

...se() function for InfoWindows. Just keep track of the last opened window, and call the close function on it when a new window is created. This demo has the functionality you're looking for. I found it in the Maps API V3 demo gallery. ...