Iterators

DAX Variables and Iterators

VAR and RETURN make complex DAX measures more readable and performant by caching intermediate results, especially when combined with iterator functions.

Iterators in Python

Understand the iterator protocol in Python, including __iter__, __next__, and how for loops use iterators internally.

Iterators and Generators in JavaScript

The iterator protocol behind for...of, and how generator functions with function*/yield produce values lazily and can pause/resume execution.

Higher-Order Functions and Iterators in Rust

Explore functions that take or return closures, the Iterator trait, and lazy adapters like map, filter, and fold.

Custom Iterators

Learn how to build your own iterator methods with yield and Enumerator, giving your classes the same each/map/select power that Ruby's built-in collections enj…

What Are Generators in JavaScript and How Do They Work?

A generator is a special function, declared with function*, that can pause its own execution at yield points and resume later exactly where it left off, produc…

What Are Async Generators in JavaScript?

An async generator is a function declared with `async function*` that can both `await` promises internally and `yield` a sequence of values over time, and is c…