Advent of Code 2024

This repo contains my attempt at Advent of Code 2024 with Golang. Inside there will be code solutions separated by the advent days folder.

Learnings

• Day 2 p2
  • append() slice function modifies the original slice
• Day 3
  • Golang regex are not able to do lookaheads (?=) or lookbehind (?<=) due to it using RE2
    • Can convert such expresion to using non-capturing group instead (?:)
• Day 9
  • Slices is always pass by reference while arrays are pass by value. Use copy() to copy slices into new variables.
  • fmt.Printf("%+v\n", v) use %+v to print the struct key as well
• Day 14
  • When iterating over a slice, the v value from i,v := range ... is copied by value. So any update wont be affect the underlying array