Functional programming

What is functional programming?

Imperative languages

Two concepts:

• Imperative -> An order, imposing a will, something absolutely necessary.

Do A

• Procedural -> A series of steps, a sequence of instructions

1. Open milk
2. Drink milk

Functional languages

• Expression -> Making known one’s thoughts or feelings.

Property 1

A functional language is not a concatenation of commands, it is a composition of functions:

• value -> value
• The same input always results in the same output
• A procedure can be a function

Property 2

Anonymous functions.

Anonymous -> Lacking a name.

(parameters) -> f(parameters)