var mapify = require('mapify');
var square = mapify(function(n){return n * n;});
square([1,2,3]);
// [1,4,9]

var arr = [{
  name: 'olivier',
  age: '27'
},{
  name: 'amy'
  age: '26'
}];
mapify(get('name'))(arr);
// ['olivier', 'amy']