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rust language - Coggle Diagram

- - - - Each value in Rust has a variable that’s called its owner.
      - There can only be one owner at a time.
      - When the owner goes out of scope, the value will be dropped.
  - - - refer to some value without taking ownership of it
      - References must always be valid.
      - don’t want to take ownership
    - - having references as function parameters
      - Mutable References
        
        only one mutable reference to a particular piece of data in a particular scope
        
        prevent data race during compiling
      - Dangling References
- - - - fixed length
      - element in array has same type
      - vector is flexiable than the two
- - - - while
    - - safer than while
- - - - type can't be changed
    - - type change is allowed
- - - - &self or &mut self
        
        use reference if you don't want to take ownership
        
        use &mut self if the instance to be changed
        
        use &self if just reading the instance