Std::distance C++ Code Example
Example: std distance
// Calculates the number of elements between first and last.  #include <iterator>     									// std::distance #include <vector>     										// std::vector #include <algorithm>   							// Just if you use std::find  vector<int> arr = {2,5,3,8,1}; int size = std::distance(arr.begin(), arr.end()); 			// 5  auto it = std::find(arr.begin(), arr.end(), 8); int position = std::distance(arr.begin(), it); 				// 3
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