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guifromrio/underscore-2.4.js

Created May 25, 2016 08:16
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underscore-2.4.js
var studentsByClass = _.groupBy(students, function (student) { return student.class })
/* {
"A": [
{ name: "John", grades: [7.0, 6.9, 8.0], class: "A" },
{ name: "Paul", grades: [5.0, 8.7, 3.7], class: "A" }
],
"B": [
{ name: "Luke", grades: [9.0, 8.2, 6.2], class: "B" },
{ name: "Mark", grades: [6.0, 9.0, 8.4], class: "B" }
]
} */
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