There are a few valid ways to output to a newly declared vector from std::transform. For example:

1. Initialize the vector to the size of the input, so that std::transform can properly index into each memory space, OR
2. Use std::back_inserter, which is an iterator that will call push_back on the output vector for each input element.

If one attempts to use std::transform on an uninitialized vector without using std::back_inserter, std::transform will induce a segfault attempting to index into memory that hasn't yet been allocated.

This ticket is to fix an instance of that bug in Resharding code.