I have a vector, in which I save objects. I need to convert it to set. I have been reading about sets, but I still have a couple of questions: How to correctly initialize it? Honestly, some tutori...

May 27, 2010 · 27 As to std::vector<int> vec, vec to get int*, you can use two method: int* arr = &vec [0]; int* arr = vec.data (); If you want to convert any type T vector to T* array, just replace …

Jun 18, 2011 · What is a good clean way to convert a std::vector<int> intVec to std::vector<double> doubleVec. Or, more generally, to convert two vectors of convertible types?

2 Another option is using as.matrix with as.vector. This can be done for one column but is also possible if you want to convert all columns to one vector. Here is a reproducible example with …

Feb 7, 2014 · I'm looking for a way to convert direction vector (X,Y,Z) into Euler angles (heading, pitch, bank). I know that direction vector by itself is not enough to get the bank angle, so …

To convert to an array or vector we need the address of its first block and array/vector length. Pointer to internal memory block Mat::data is a public uchar pointer to its memory. But this …

Jul 27, 2020 · Now that the C++20 ranges implementation is actually here and released under GCC 10.2, I would like to know how to convert a ranges view back to an actual container, like …

Sep 25, 2014 · I have a vector<std::string> variable. I need to pass it onto a method which accepts char** as an input parameter. how to do this ? If possible I need to pass a writable …

Feb 25, 2011 · Short of (the obvious) building a C style string first then using that to create a std::string, is there a quicker/alternative/"better" way to initialize a string from a vector of chars?

May 17, 2018 · In C++, what is the simplest way to convert a vector of ints (i.e. vector<int>) to a string ?