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 the above int to …

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 first converting …

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 there's also anoth...

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 memory may not be …

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 a vector. I've …

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 one. Update 1: In …

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 ?