Functions (2)

• Parameter passing mode

  • in vs out vs inout
    • out was used
      • to return multiple values
      • let the caller allocate memory
    • out deprecated by GCs and lists as first class values

• Purity:

  • The function must not depend nor modify a global state.
    • consequence: same parameters 1 same result
    • eg: printf, ++ are unpure functions

Notes: