Pokemon type matchup table example with labelled items

pkmn3.nim

type PokeType = enum
  Fire
  Water
  Grass
  Electric

const matchups: array[Fire..Electric, array[Fire..Electric, float]] = [
  Fire: [
    Fire: 0.5,
    Water: 0.5,
    Grass: 2.0,
    Electric: 1.0,
  ],
  Water: [
    Fire: 2.0,
    Water: 0.5,
    Grass: 0.5,
    Electric: 1.0,
  ],
  Grass: [
    Fire: 0.5,
    Water: 2.0,
    Grass: 0.5,
    Electric: 1.0,
  ],
  Electric: [
    Fire: 1.0,
    Water: 2.0,
    Grass: 0.5,
    Electric: 0.5,
  ],
]

echo matchups[Fire][Grass]  # 2.0,  it's super effective!