I am hopeful that Julia should be able to get this cross-session caching of compiled code. Would make restarting the REPL (to e.g. add a field to a struct) much less frustrating.
Caching is easy. The hard part here is correctly invalidating the cache. Specifically, if a user is using different libraries between sessions, figuring out which methods have been overridden (or inline code that was overridden) becomes complicated.
Yeah, restarting a Lisp REPL after you’ve compiled your code is transparently essentially instantaneous, because everything is cached and checked for changes, and 99% of the time most of your code and nearly all of your dependencies aren’t changing hour to hour.
