This document benchmarks a few different ways of assembling a list of values in R. Surprisingly, it is possible to grow a list of values with amortized O(1) append behavior using base R types, although it is not especially idiomatic.

Homebrew packages installed with options.

Caveat emptor

While we’re waiting for Mayday to release their full data dump to the public, we can take a peek at some of the data they’ve already submitted to the FEC for the period ending 6/30 (before the end of the second round).