Iterator

DAX Aggregation Functions

Aggregation functions like SUM, AVERAGE, COUNT, and their X-suffixed iterator counterparts are the workhorses for summarizing data in DAX measures.

Iterator Pattern

A behavioral pattern that provides a way to access elements of an aggregate object sequentially without exposing its underlying representation.

Iterator in Java

Learn how to safely traverse and modify collections using Iterator, and why direct modification during a for-each loop throws ConcurrentModificationException.

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…

Python Generators & Iterators Cheat Sheet

Lazy iteration in Python covering generator functions, yield from, the iterator protocol, and commonly used itertools functions.