Average

Description:

This method finds the mean of the values in a sequence. It accepts an argument as selector that the selected property should be numeric

Samples:

let numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 15, 19];

let stock = [
  { name: 'Apple', category: 'Fruit', price: 0.30 },
  { name: 'Banana', category: 'Fruit', price: 0.35 },
  { name: 'Orange', category: 'Fruit', price: 0.29 },
  { name: 'Cabbage', category: 'Vegetable', price: 0.49 },
  { name: 'Carrot', category: 'Vegetable', price: 0.29 },
  { name: 'Lettuce', category: 'Vegetable', price: 0.30 },
  { name: 'Milk', category: 'Dairy', price: 1.12 }
];

let average = numbers.asEnumerable().average();
console.log('Avrage value in numbers collection => ' + average); 

average = stock.asEnumerable().average(item => item.price);
console.log('Aletge price in stockitems => ' + average);