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- import _ from 'underscore';
- let ranks = [{name:'Mouse',rank:1},{name:'Keyboard',rank:2},{name:'CPU',rank:3}];
- let sortByRanks = (ranks)=>{
- return _.sortBy(_pluck(ranks,'rank'), function(num) {
- return num;
- })
- };
- let getRankAverage = (ranks)=>{
- return _.reduce(_.pluck(ranks,'rank'), function(memo, num) {
- return memo + num;
- }, 0) / (arr.length === 0 ? 1 : arr.length);
- }
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