2015-12-26

There are property implementation patterns that come up repeatedly. Rather than hardcode a fixed set of patterns into the compiler, we should provide a general “property behavior” mechanism to allow these patterns to be defined as libraries.

…

A var or let declaration can specify its behavior in parens after the keyword:

var (lazy) foo = 1738

talk by Ken Wong

“I want it to do well and I keep changing what that means.”

one link you can point people to