使用lodash.curry库函数使函数柯里化

var persons = [{name: 'kevin', age: 11}, {name: 'daisy', age: 24}]
 
let getProp = _.curry(function (key, obj) {
    return obj[key]
});
let names2 = persons.map(getProp('name'))
console.log(names2); //['kevin', 'daisy']
 
let ages2 = persons.map(getProp('age'))