Programming Concepts

Programming Paradigms

Imperative Programming

• You tell the computer how to do something, step by step

• total = 0
  for i in range(1, 6):
      total += i
  print(total)```

• const button = document.createElement("button");
  button.innerText = "Click me";
  button.addEventListener("click", () => alert("Clicked"));
  document.body.appendChild(button);

• Imperative Paradigms

  • Procedural Programming - C, Python. Using procedures/functions
  • Object Oriented Programming - C++, Java, C++. Using objects with state and behavior.

Declarative Programming

• You tell the computer what you want, and the underlying system figures out the how

• print(sum(range(1, 6)))

• function App() {
    return <button onClick={() => alert("Clicked")}>Click me</button>;
  }

• Declarative Paradigms

  • Functional Programming - Haskell, JS.
  • Logic Programming - Prolog, Datalog
  • Database Query Language - SQL
  • Config/markup languages - HTML, CSS, YAML, Terraform