Posted by naruse on 12 Dec 2016 We are pleased to announce the release of Ruby 2.4.0-rc1. Ruby 2.4.0-rc1 is the first release candidate of Ruby 2.4.0. This rc1 is released to get feedback from the community. Feel free to send feedback since you can still fix the features. Introduce hash table improvement (by Vladimir Makarov) Improve the internal structure of hash table (st_table) by introducing o