Overview

  • What is functional programming?
    • Programming with first-class functions?
    • Programming with mathematical functions?
      • No side-effects (pure FP)
      • Same input, same output (deterministic)
      • Main means for computation: function application
  • What is functional programming
    • A style of programming that the basic method of computation is the application of functions to arguments
  • What is functional language
    • A language that supports and encourages the style of functional programming

Haskell

  • Purely functional
  • State-of-the-art

Software Crisis

  • Cope with size & complexity of modern computer
  • Reduce time & cost of program development
  • Increase confident in finished work

Functional programming:

  • Allows programs to be written at a high-level of abstraction
  • Reuse software components
  • Encourage the use of formal verification
  • Permit rapid prototyping
  • Provide powerful problem-solving tools

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