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UniBreakfast/mapThisArg.js

Created October 1, 2021 08:32
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Higher order methods with thisArg usage
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mapThisArg.js
prices = [10, 25, 70, 100, 120]
discountFuncs = [5, 10, 25, 30]
.map(num => x => '$' + (x / 100 * (100-num)).toFixed(2))
discountFuncs.map([].map, prices)
// (4) [Array(5), Array(5), Array(5), Array(5)]
// 0: (5) ['$9.50', '$23.75', '$66.50', '$95.00', '$114.00']
// 1: (5) ['$9.00', '$22.50', '$63.00', '$90.00', '$108.00']
// 2: (5) ['$7.50', '$18.75', '$52.50', '$75.00', '$90.00']
// 3: (5) ['$7.00', '$17.50', '$49.00', '$70.00', '$84.00']
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