Map.slice
slice($listOfKeys) -> map
Description
Get a subset of a Map for the given $listOfKeys.
If a key is missing, the value will be filled as an empty string ''.
$map = { a: 1, b: 2, c: 3 }
$map.slice(['a', 'c'])
//= { a: 1, c: 3 }
// With missing key
$map.slice(['a', 'X'])
//= { a: 1, X: '' }