Readings: Functional programming

Reading

Functional Programming Concepts

• What is functional programming?

  • a style of building the structure and elements of computer programs — that treats computation as the evaluation of mathematical functions and avoids changing-state and mutable data

• What is a pure function and how do we know if something is a pure function?

  • It returns the same result if given the same arguments, It does not cause any observable side effects

• What are the benefits of a pure function?

  • easier to test, no need to mock?,

• What is immutability?

  • unchanging over time, or unable to be changed

• What is Referential transparency?

  • f a function consistently yields the same result for the same input

Videos

Node JS Tutorial for Beginners #6 - Modules and require()

• What is a module?

  • js libraries/file

• What does the word ‘require’ do?

  • includes a module using the same name

• How do we bring another module into the file the we are working in?

  • require(./'file-name');

• What do we have to do to make a module available?

  • module.exports = 'file-name'

Things I want to know more about:

• when do we use functional programming, are we already using it?