# How Much is True?

## Create a function which returns the number of `true` values there are in an array.

### Examples
```js
countTrue([true, false, false, true, false]) ➞ 2

countTrue([false, false, false, false]) ➞ 0

countTrue([]) ➞ 0
```

### Notes
- Return `0` if given an empty array.
- All array items are of the type bool (`true` or `false`).