multik-core/org.jetbrains.kotlinx.multik.ndarray.operations/groupingNDArrayBy

groupingNDArrayBy

inline fun <T, D : Dimension, K> MultiArray<T, D>.groupingNDArrayBy(crossinline keySelector: (T) -> K): Grouping<T, K>
Content copied to clipboard

Creates a Grouping source from an ndarray to be used later with one of group-and-fold operations using the specified keySelector function to extract a key from each element.