RustBrock/Constants.md

Constants

• Can be declared anywhere,
• The convention to use all caps in a constant's name
• Needs const keyword
• Not always evaluated at compile time (there are rules for this but too complex to know everything)
• Variables can only be assigned once (needs mut to assign more than once (need to be same type))

const SECONDS_PER_HOUR: i32 = 60 * 60;