Tag: constants
Better Know A Ruby Thing Bonus: Contestants and Nesting
Sorry for skipping a week or two – I was approving copyedits on the book that is now called Programming Ruby 3.3, because we now want to be proactive about the next release.
Coincidentally, the copyedit review does relate to this newsletter. I noticed a particular code sample as I was going through the book again, and it highlights a feature of Ruby’s constant lookup that I didn’t discuss last time.
Better Know A Ruby Thing #2: Constants
A fun thing about learning Ruby is that sometimes concepts that have the same name as in other languages have different behavior and purpose in Ruby.
Today: constants
They aren’t actually constant.
They aren’t only used for small strings or magic literals. They aren’t even mostly used for that in most Ruby programs.
Constants are one of the core pieces of Ruby and they aren’t super-well documented in the official site, so here we go…