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determine if array has duplicates lodash Code Example
determine if array has duplicates lodash 
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));
Source: stackoverflow.com



Javascript

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