Kotlin single assignment filter and map

Question

Closed. This question needs details or clarity. It is not currently accepting answers. question from:https://stackoverflow.com/questions/65864911/kotlin-single-assignment-filter-and-map

Answer 1

I think this should be it:

val movesWithMetaDataList = pokemonWithMovesAndMetaData.moves
    .flatMap { move -> 
        pokemonWithMovesAndMetaData.pokemonMoveMetaData
            .filter { it.moveName == move.name }
            .map { PokemonMoveWithMetaData(it, move) }
    }

For each move I find the metadata for that move using filter, and then I use map to create PokemonMoveWithMetaData out of those. The flatMap function will flatten the lists created for each move/metadata-pair back into a single resulting list.