Advent Of Code 2020

C++11 with the occasional C++17 trivial feature like initialized class members using vectors in the class definition.

Here I'm listing anything I discover along the way that would ideally result in refactors or simplifications in previous solutions.

• std::ifstream has a getline function. I've used get with individual characters for the first few days.
• Need to check that I've used match[1].str() everywhere necessary. Otherwise strange things appear to happen.
• I think I've been using the wrong regex match type, which means that Line.c_str() needed to be used - regex::smatch instead of regex::cmatch.
• Need to check whether input stream is open with ifs.fail() as the cwd when run from within VSCode seems to be the workspace rather than the current file directory.
• I've been extremely inconsistent in naming, in particular starting with a capital or not. Should figure out my linting story.
• When deleting values from a data structure we're iterating through, do the dance of moving the iterator properly over the deleted value and onto the next one rather than breaking out of the loop and starting iteration again.
• There's some weird interplay between the following lines that messes up the last match in the line if the order is reversed:

        Buses.push_back(Match[1].str());
        SearchString = Match.suffix();