GroupBy returns a sequence of objects that match the key value for the grouping.

JavaScript (Reduce)

var result = persons.reduce((previous, person) => {
    (previous[person.lastname] = previous[person.lastname] || []).push(person);
    return previous;
}, []);

fuss/lambda_calculus/functional_programming/aggreagators/groupby.txt ยท Last modified: 2017/03/07 08:52 by office

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