small change to the array method files

resources/filter.md

@@ -41,8 +41,8 @@ let myListOfAges = [22, 12, 43, 44, 22, 54, 16, 87, 12];
 let myListOfOldEnoughAges = myListOfAges.filter(eachAge => eachAge >= 18);
 ```
 
-- `filter` exists as a method on all arrays, it takes one uncalled function as an argument
-- This uncalled function is called for each item in the array, as filter iterates over each item
+- `filter` exists as a method on all arrays, it takes one unnamed function (also known as an anonymous function) as an argument
+- This anonymous function is called for each item in the array, as filter iterates over each item
 - This function is provided the value currently being iterated over as the first parameter, in the above
 case, that means that `eachAge` represents `22` the first time it is called, then `12`, and then `43` and so on.
 - This function expects either a `true` or a `false` to be returned inside of it.

resources/map.md

@@ -51,8 +51,8 @@ let listOfPetAgesInHumanYears = listOfPets.map(function(pet) {
 });
 ```
 
-- `map` exists as a method on all arrays, it takes one uncalled function as an argument
-- This uncalled function is called for each item in the array, as map iterates over each item
+- `map` exists as a method on all arrays, it takes one (also known as an anonymous function) function as an argument
+- This anonymous function is called for each item in the array, as map iterates over each item
 - This function is provided the value currently being iterated over as the first parameter, in the above
 case, that means that `pet` represents `{type: 'Dog', age: 5}` the first time it is called, then `{type: 'Cat', age: 11}` the second time, 
 and then `{type: 'Dog', age: 9}` the third.

resources/reduce.md

@@ -43,8 +43,8 @@ const soldItems = [
 const totalSales = soldItems.reduce((accumulator, nextItem) => accumulator + nextItem.price, 0);
 ```
 
-- `reduce` exists as a method on all arrays, it takes one uncalled function as the first argument
-- This uncalled function is called for each item in the array, as reduce iterates over each item
+- `reduce` exists as a method on all arrays, it takes one unnamed function (also known as an anonymous function) as the first argument
+- This anonymous function is called for each item in the array, as reduce iterates over each item
 - It also takes an optional second parameter, which will act as the first value
   - In the above example, `0` is the optional second parameter
   - The first time reduce is called, `accumulator` is equal to `0`