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28 Mar 2016 M. David Green demonstrates how using the functional programming techniques of mapping & reducing can lead to cleaner code which is easy 27 Sep 2014 After getting to know the basics of Underscore in part I, it's time to delve a little deeper. If you are not familiar with each, map, or reduce, you 3 Mar 2014 Underscore.js, as described on their website, is. It doesn't look too different from non-Underscore reduce: _.reduce(jossWhedon.shows, 31 Jan 2018 (Title suggested by Mohan Ram). Javascript has its problems, but syntax is not one of them. The ternary operator, the es6 map/reduce and the In Underscore, the _reduce() function is used to transform an array or object properties Underscore JS sortBy Function | 7 Examples of the Every Function in . list down to one single value, which is exactly what we did here in this tutorial. _.map([1, 2, 3], function(num){ return num * 3; }); => [3, 6, 9] _.map({one: 1, two: 2, . _.sample([1, 2, 3, 4, 5, 6]); => 4 _.sample([1, 2, 3, 4, 5, 6], 3); => [1, 6, 2]. 3 Jan 2016 Underscore.js provides functions that support map, reduce etc. but without having did both map and reduce, adapting some of the sample code to sort a mixed 14 Aug 2013 view raw standard-reduce.js hosted with ? by GitHub. Adding up values . doctors = _.filter(doctors, function(doctor) {. return doctor.begin >31 Aug 2015 But since JavaScript doesn't have list comprehensions, I'm learning some functional constructs in Underscore.js. Underscore's reduce()