Iterables<E> extension

Penggunaan testList.groupBy((group)=>group'yang_mau_digrup'); Hasil {zeffry: {id: 1, name: zeffry}, {id: 3, name: zeffry}, jonan: {id: 2, name: jonan}}

on

Methods

groupBy<K>(K keyFunction(E)) → Map<K, List<E>>

Available on Iterable<E>, provided by the Iterables extension