https://github.com/tethik/advent-of-code

My solutions for Advent of Code
https://github.com/tethik/advent-of-code

Last synced: 4 days ago
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My solutions for Advent of Code

• Host: GitHub
• URL: https://github.com/tethik/advent-of-code
• Owner: Tethik
• Created: 2021-12-01T09:21:26.000Z (almost 3 years ago)
• Default Branch: main
• Last Pushed: 2023-12-11T13:26:11.000Z (11 months ago)
• Last Synced: 2024-10-11T08:26:48.802Z (27 days ago)
• Language: Python
• Homepage:
• Size: 2.28 MB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Advent of Code

My solutions for Advent of Code.

## 2023 Learnings

- Copilot is awesome for writing filler (i.e. see [lib/xy.go](lib/xy.go)).

- Copilot is not so awesome for creating off by one errors. I had issues with the filler on day 5 because it generated an incorrect

  `Contains` function that was kind of annoying to debug.

- Probably need something better than `string.Split` to parse strings (quickly).

- Using a compiled regex pattern was actually fairly nice with Go's if syntax:

```go

if matched := numberPattern.FindStringSubmatch(line); len(matched) > 0 {

    dst := lib.MustAtoi(matched[1])

    src := lib.MustAtoi(matched[2])

    ran := lib.MustAtoi(matched[3])

    currMap.Ranges = append(currMap.Ranges, Range{Src: src, Dst: dst, Ran: ran})

}

```

- Must pattern helps clean up `if err != nil -> panic` statements (see above)

- To organize data I'm leaning towards putting everything into structs and implementing interfaces around them. It's a bit too painful otherwise without tuples and easy dictionaries.

- Sorting is a bit odd. Seems you need to fulfill an interfaces which can be a bit cumbersome.

- `slices.Reverse(someSlice)` reverses in place. Useful after sorting.

- pointers are worth keeping in mind. Ended up accidentally passing a slice by reference accidentally on day 7 and being weirded out when value was still retained. `slices.Clone()` to clone a slice, but on the other hand passing references has a lot of benefit. New little hack learned, instead of cloning change value, run function, then reset back to original value. Probably cheaper than clone ;)