A collection where each key is unique but has a list of values
Protected
Return true if the lookup contains a nullish key
Return values with a nullish key
The number of keys in the lookup
Add a value to the lookup
Add a range of values to the lookup
Clear the collection
Delete all values from a key
Create iterator for all values and their keys
Iterate all keys and their values
Get the list of values from a key
Check if a key exists in the lookup
Create iterator for values with a non-null key
Get all non-null keys
Set the collection for a given key
Create an array containing the keys and values in the lookup. Excludes nullable keys
Exclude nullable keys when true
Create an array containing the keys and values in the lookup.
Optional
Convert to Map
Get all value arrays
A collection where each key is unique but has a list of values