Also, just mentioning, on Chrome/Windows ... the code sections are looking :

Advent of Code - Day 6 Problem 1.

Nice and simple for this part.

Advent of Code - Day 5 Problem 2

The amount of code that was thrown away here, once the solution was clear. 😅 (I had assumed it was harder than it really was).

Advent of Code - Day 5 Problem 1

Dictionary of Lists standing in for a Graph. 🙂

Advent of Code - Day 4 Problem 1

I want to go back later and compare this (ugly) buffer idea to
String.StartsWith.

Advent of Code - Day 3 Problem 2
I was hung up on a tiny logic error (cursor movement), but it's worked out now. 😅😪🙂
github.com/pmcgee69/Adv...

Most of what I added was this : parsers to capture 'Do' and 'Don't', and extend the main loop to call them.

Advent of Code. Day 3. Part 1.
Semi-inspired by the idea of Parser Combinators.
But I haven't fully absorbed the ideas ... and I want better syntax in Delphi around Optional and Result types.
It will be interesting to do this problem in Rust now.

Advent of Code. Day 2.
Some ugliness there :/ ... might look better in the future sometime.

My Advent of Code solutions in Delphi (Object Pascal). 😎
Day 1.