ownership.md

Ownership

• Only one owner for all values & enforced by the borrow checker
• If a value is moved to a new ownership it is no longer accessible unless the value's type implements the Copy trait
• Types that contain non-copy types or types that require deallocation when a value is dropped cannot use Copy trait
• Rust automatically drops values when they go out of scope. The rule drop order for rust is:
  • variables (including function args) are dropped in reverse order
  • nested-values are dropped in source code order
  • A hash table with a key value pair will drop the table first before the key value pair

Ownership Rules

• Each value has a variable that's called the owner
• Only one owner at a time
• Value is dropped when owner leaves scope