Hash tables are useful for expressing build variants -- some examples at the end of this comment: https://news.ycombinator.com/item?id=15043633 https://news.yc

Hash tables are useful for expressing build variants -- some examples at the end of this comment: https://news.ycombinator.com/item?id=15043633 https://news.ycombinator.com/item?id=15043633 debug/release, internationalized builds, coverage builds, profile-directed feedback, running parameterized test suites, etc.