“Lodash Count Duplikate in Array” Code-Antworten

Stellen Sie fest, ob Array Lodash Duplikate hat

function hasDuplicates(a) {
  return _.uniq(a).length !== a.length; 
}

var a = [1,2,1,3,4,5];
var b = [1,2,3,4,5,6];

document.write(hasDuplicates(a), ',',hasDuplicates(b));

Embarrassed Echidna

Lodash Count Duplikate in Array

const data = ["apple", "banana", "apple", "orange", "grapes", "mango", "banana"];

const result = _.values(_.groupBy(data)).map(d => ({name: d[0], count: d.length}));

console.log(result);

Difficult Dunlin

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