underscore group by two fields

Thoughtful Tuatara answered on October 16, 2020 Popularity 3/10 Helpfulness 2/10

answer underscore group by two fields

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_.map(_.groupBy(list, 'date'), (value, key) => ({[key]: _.groupBy(value, 'foo')}))

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Tags: group-by whatever

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Contributed on Oct 16 2020

Thoughtful Tuatara

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