Class MapExtensions

Static GroupBy

• GroupBy<T>(list: T[], keyGetter: any): Map<any, T[]>

• Handy method to create an ES6 Map with a grouping of keys.

  https://stackoverflow.com/a/38327540

  example

  MapExtensions.GroupBy(cards, card => card.suit);

  Type parameters

  • T

  Parameters

  • list: T[]

    Array of objects to group

  • keyGetter: any

    Key to group by. "obj => obj.key"

  Returns Map<any, T[]>