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I built my own CityMapper
We've all used a public transit router to find a quick route from A to B, such as Google Maps or CityMapper, but how do they actually work?
Asher Falcon - software engineer & student
Visit asherfalcon.com → RSS feedOn Hacker News Jul 2025 – Oct 2025
Tools & Productivity 2Software Engineering 1Life, Learning & Writing 1
We've all used a public transit router to find a quick route from A to B, such as Google Maps or CityMapper, but how do they actually work?
I was recently thinking about the huge number of ways you can shuffle a deck of 52 cards and wondered if it would be possible to store arbitrary data.