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What is the best way to test for an empty string in Go?

Which method is best (more idomatic) for testing non-empty strings (in Go)? 10 Answers ...
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Check if a class has a member function of a given signature

...value = type::value; }; Usage: struct X { int serialize(const std::string&) { return 42; } }; struct Y : X {}; std::cout << has_serialize<Y, int(const std::string&)>::value; // will print 1 sh...
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How to convert std::string to lower case?

I want to convert a std::string to lowercase. I am aware of the function tolower() , however in the past I have had issues with this function and it is hardly ideal anyway as use with a std::string would require iterating over each character. ...
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Why declare a struct that only contains an array in C?

... You can use struct to make a new type of data like string. you can define : struct String { char Char[MAX]; }; or you can create a List of data that you can use it by argument of functions or return it in your methods. The struct is more flexible than an array, because...
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Why doesn't Java support unsigned ints?

...er performance rather than assuming it to be true. It is possible that the extra jiggery-pokery required to manipulate shorts rather than ints (which is usually the type that the processor 'likes to use') could actually be detrimental to performance in a particular application. Not always, but you s...
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Why is a boolean 1 byte and not 1 bit of size?

...Obviously, such a pointer would not be convertible to void* because of the extra storage requirement for the bit number. – Maxim Egorushkin Jan 7 '11 at 17:10 ...
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How do I URL encode a string

I have a URL string ( NSString ) with spaces and & characters. How do I url encode the entire string (including the & ampersand character and spaces)? ...
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What does the explicit keyword mean?

...cidental construction that can hide bugs. Contrived example: You have a MyString(int size) class with a constructor that constructs a string of the given size. You have a function print(const MyString&), and you call print(3) (when you actually intended to call print("3")). You expect it to p...
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When would anyone use a union? Is it a remnant from the C-only days?

...tions in the world now use just this technique for implementing the "small string optimization," a great optimization alternative that reuses the storage inside a string object itself: for large strings, space inside the string object stores the usual pointer to the dynamically allocated buffer and ...
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Should I call Close() or Dispose() for stream objects?

...Microsoft.Usage : Object 'f' can be disposed more than once in method 'Foo(string)'. To avoid generating a System.ObjectDisposedException you should not call Dispose more than one time on an object.: Lines: 41" So while the current implementation is fine with calling Close and Dispose, according to ...