vector Archives - Page 4 of 4

Why can’t I make a vector of references?

When I do this: std::vector<int> hello; Everything works great. However, when I make it a vector of references instead: std::vector<int &> hello; I ...

May 7, 2022
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How to convert vector to array

How do I convert a std::vector<double> to a double array...

May 6, 2022
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Counting the number of elements with the values of x in a vector

I have a vector of numbers: numbers <- c(4,23,4,23,5,43,54,56,657,67,67,435, 453,435,324,34,456,56,567,65,34,435) How can I have R count the number of times a value x ...

May 5, 2022
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Test if a vector contains a given element

How to check if a vector contains a given value? 7 s 7

April 30, 2022
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How do I erase an element from std::vector by index?

I have a std::vector<int>, and I want to delete the n’th element. How do I do that? std::vector<int> vec; vec.push_back(6); vec.push_back(-17); vec.push_back(12); vec.erase(???); ...

April 29, 2022
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What is the easiest way to initialize a std::vector with hardcoded elements?

I can create an array and initialize it like this: int a...

April 28, 2022
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Why is Java Vector (and Stack) class considered obsolete or deprecated?

Why is Java Vector considered a legacy class, obsolete or deprecated? Isn’t its use valid when working with concurrency? And if I don’t ...

April 26, 2022
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How to find out if an item is present in a std::vector?

All I want to do is to check whether an element exists in the vector or not, so I can deal with each ...

April 25, 2022
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Appending a vector to a vector [duplicate]

This question already has answers here: Concatenating two std::vectors (26 answers) Closed 6 years ago. Assuming I have 2 standard vectors: vector<int> a; ...

April 22, 2022
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Concatenating two std::vectors

How do I concatenate two std::vectors? 26 s 26 vector1.insert( vector1.end(), vector2.begin(), vector2.end() );

April 19, 2022
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