Java’s HashMap (AbstractMap really) hashCode() implementation sums the hash codes of its entries rather than multiplies them by a prime number like String.hashCode() does. This can cause weird collisions in very similar maps.
October 2018 archive
Oct 16 2018
Non-Post.
Good news: I survived. Life’s much better now than the last time we spoke. Thanks for asking. Also good news: I’m cleaning up the site / blog a bit, trying to bring it up to at least a 2012 fashionable look, and I’ve been working on a fun book.
About
Jason Baker is a software engineer. He works on enterprise infrastructure for big companies. He also enjoys creating smaller scale software products and scripts in his spare time.