Recent questions tagged std

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std - C++ Delete Duplicate Entries in a vector

I have a vector of times, and there are a number of places where the time is duplicated. The time ... consecutive duplicate points. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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std - C++ string equivalent for strrchr

Using C strings I would write the following code to get the file name from a file path: #include <string.h> ... ::string from #include <string>) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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std - Is it allowed to write to a ofstream when it is not opened in c++

I have a code like this: # in class definition std::ofstream m_myFile; ## some where in code m_myFile.open( ... I am using Visual Studio 2013. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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std - sprintf with C++ string class

I really liked the answer given in sprintf in c++? but it still isn't quite what I'm looking for. I want to ... but what I want to do is neater. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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std - Should C++ allocator::allocate throw or return nullptr when allocation fails?

The Allocator concept and std::allocator_traits do not say what allocate will do when allocation fail -- will it ... get the correct behavior. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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std - Ignoring commas in c++ cin

I have the following code: float x1 = 0,x2 = 0,y1 = 0,y2 = 0; cout << "Enter coordinates as " ... the correct implementation of cin.ignore be? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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std - Why does the C++ standard algorithm "count" return a difference_type instead of size_t?

Why is the return type of std::count the difference_type of the iterators (often a ptrdiff_t). ... <InputIterator>::difference_type. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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