[andrewmunsell]

To shed some light on the practice of using `let` vs. `var`, an excerpt from the book by Apple:

“If a stored value in your code is not going to change, always declare it as a constant with the let keyword. Use variables only for storing values that need to be able to change.”

Excerpt From: Apple Inc. “The Swift Programming Language.” iBooks. https://itun.es/us/jEUH0.l

[jquave]

Thanks Andrew, I am updating the posts as I learn more. We're all still learning.