"Resize vector c++" Code Answer's
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initialize 3d vector c++
vector<vector<vector<double>>> f(3, vector<vector<double>>(4, vector<double>(5)));
Source: stackoverflow.com
when a vector in c++ is resized what happens to the elements of the vector
The C++ function std::vector::resize() changes the size of vector. If n is smaller than current size then extra elements are destroyed.
If n is greater than current container size then new elements are inserted at the end of vector.
If val is specified then new elements are initialed with val.
Source: www.tutorialspoint.com
c++ vector resize
std::vector<int> vec = {1, 2, 3};
vec.resize(2); // {1, 2}
vec.resize(4); // {1, 2, 0, 0,}
vec.resize(6, 9); // {1, 2, 0, 0, 9, 9}
c++ vector extend vector
std::vector<int> a = {1, 2};
std::vector<int> b = {3, 4, 5};
a.insert(a.end(), b.begin(), b.end()); // a = {1, 2, 3, 4, 5}
Resize vector c++
resize (size_type n, const value_type& val);
The resize() method (and passing argument to constructor is equivalent to that)
will insert or delete appropriate number of elements to the vector to make it
given size (it has optional second argument to specify their value).
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