https://github.com/busypeoples/functional-programming-javascript var data = [ { name: "Jamestown", population: 2047, temperatures: [-34, 67, 101, 87] }, { name: "Awesome Town", population: 3568, temperatures: [-3, 4, 9, 12] }, { name: "Funky Town", population: 1000000, temperatures: [75, 75, 75, 75, 75] } ]; function addNumbers(a, b) { return a + b; } // The reduce method takes a function as its first argument, and that function // accepts both the current item in the list and the current total result from // whatever calculation you're performing. var totalTemp = temperatures.reduce(function(previousValue, currentValue){ // After this calculation is returned, the next currentValue will be // previousValue + currentValue, and the next previousValue will be the ...
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