LemmingAvalanche / aoc-2022

See: https://adventofcode.com/2022

Resources

• https://docs.rs/inpt/latest/inpt/
• Bit operators:
  • https://stackoverflow.com/questions/51571066/what-are-the-exact-semantics-of-rusts-shift-operators
  • https://en.wikipedia.org/wiki/Logical_shift
  • https://en.wikipedia.org/wiki/Arithmetic_shift

Snippets and common problems

lines()

I often have problems with this iterator.

Collecting into a Vec can help. Then you can use slice iterators, which tend to be more forgiving.

        .lines()
        [what is inbetween—probably one or more `map(…)`]
        .collect::<Vec<u32>>();

lines() into numbers

[…]
        .lines()
        .map(|s| s.parse::<u32>().expect("not an integer"));

Parsing trouble: feedback and help on Day 5

I wasn’t happy with my approach to parsing so I asked someone.