aoc to learn rust!

or will I just be a usafe { } rust noob forever?

BORROWCHECKING: ON. COPILOT: OFF.

input

Opening files? Whose got time for that? I'll just be feeding on stdin

cat datx.txt | cargo run

day 1:

read the first bit of the rust book but no borrow checking or anything
loop is an interesting keyword
const by default is nice I guess
& as a reference -> "don't copy me"
vec! is a macro that creates a vector
there's Result and there's Option for return types
- Result is for when you want to return an error (Ok or Err)
- Option is for when you want to return None (None or Some), reminds me of Maybe in Haskell or the Optional type in Python
- you can .unwrap() a Result or Option to get the value out, but it will panic if it's Err or None
You can do parse::<TYPE> to parse into a type. parse::<i32>() will parse into an integer. I think this is like a template function in C++.

so far, so good.