lodash Working with Lists and Arrays _.reduce
Example
Reducing a list to a single value is easy when you have _.reduce. Let's say
we wanted to see if a group of people could afford a cab ride. We'd want to
look at all the money they have together as a group, which means we'd want to
reduce a list of objects to a single value, in this case the sum of the money
they have.
var friends = [
{
'name': 'Alice',
'money': 10
},
{
'name': 'Bob',
'money': 3
},
{
'name': 'Clyde',
'money': 8
},
]
var totalMoney = function(arr){
return _.reduce(
arr,
function(accumulated, e){
return accumulated + e.money;
},
0
);
}
function canAffordCab(arr){
return 18 < totalMoney(arr);
}
canAffordCab(friends); // returns true
