Code Arena

Skill path

1. 1
   Rookie Rookie

   Slices, maps, basic syntax
   +0 XP
2. 2
   Apprentice Apprentice

   Structs, interfaces, errors
   +500 XP
3. 3
   Engineer Engineer

   Goroutines, channels, context
   +1300 XP
4. 4
   Senior Senior

   Generics, profiling, modules
   +2500 XP
5. 5
   Architect Architect

   Microservices, gRPC, infra
   +4100 XP
6. 6
   Legend Legend

   Contribute a challenge
   +6100 XP

Challenge types

Open challenges

• Easy Rookie SpeedRun

  Go: Slice len and cap After Append

  +100 XP · 5 min · slices, make, append
• Medium Apprentice SpeedRun

  Go: Defer Execution Order

  +150 XP · 6 min · defer, control-flow
• Medium Apprentice SpeedRun

  Go: Reading From a Nil Map

  +170 XP · 4 min · maps, zero-values, panics
• Medium Engineer SpeedRun

  Go: len() of a UTF-8 String

  +200 XP · 6 min · strings, utf8, runes
• Hard Engineer SpeedRun

  Go: The Nil Interface That Isn't Nil

  +250 XP · 6 min · interfaces, nil, type-assertions

Badges earned