Advent of Code
Proper Noun · Hacker Culture
Definitions
An annual programming puzzle event held each December in which participants solve daily coding challenges for fun, learning, or competition. In developer culture it is a common way to practice algorithms, explore languages, and compare solutions socially.
In plain English: A yearly programming puzzle event popular with developers.
Example: "The team used Advent of Code as a low-stakes excuse to try Rust, compare parsing tricks, and argue about elegance versus speed."