Service.Dict
s provide the exact same functionality as Elm's built-in Dict
type, while allowing for easy and safe extension with custom key types.
A mapping of unique keys to values.
max : Dict k v -> Maybe ( k, v )
Get the highest key-value pair in the dictionary.
foldl : Fold ( k, v ) b -> Fold (Dict k v) b
Reduce the key-value pairs in the dictionary from lowest to highest.
foldr : Fold ( k, v ) b -> Fold (Dict k v) b
Reduce the key-value pairs in the dictionary from highest to lowest.
fold : Sorter k -> Fold ( k, v ) (Dict k v)
Insert a key-value pair into the dictionary.
fromList : Sorter k -> List ( k, v ) -> Dict k v
Convert an association list into a dictionary.
get : Sorter k -> k -> Dict k v -> Maybe v
Get the value of a key in the dictionary.
isEmpty : Filter (Dict k v)
Check if the dictionary is empty.
previous : Sorter k -> k -> Dict k v -> Maybe ( k, v )
Get the next smallest key-value pair in the dictionary.
member : Sorter k -> k -> Filter (Dict k v)
Check if the given key exists in the dictionary.
middle : Dict k v -> Maybe ( k, v )
Get the middle key-value pair of the dictionary.
next : Sorter k -> k -> Dict k v -> Maybe ( k, v )
Get the next highest key-value pair in the dictionary
remove : Sorter k -> k -> Dict k v -> Dict k v
Remove a key from a dict. If the key is not found, no changes are made.
min : Dict k v -> Maybe ( k, v )
Get the smallest key-value pair in the dictionary.
filter : Sorter k -> Filter ( k, v ) -> Dict k v -> Dict k v
Keep key-value pairs that pass the filter.
size : Dict k v -> Basics.Int
Get the number of entries in the dictionary.
insert : Sorter k -> k -> v -> Dict k v -> Dict k v
Insert a value at the given key.
keys : Dict k v -> List k
Get a list of the keys in the dictionary.
values : Dict k v -> List v
Get a list of the values in the dictionary.
map : (k -> a -> b) -> Dict k a -> Dict k b
Apply a function to each value in the dictionary.
update : Sorter k -> k -> (Maybe v -> Maybe v) -> Dict k v -> Dict k v
Update the value of the given key.
singleton : k -> v -> Dict k v
Create a dictionary with one entry.
fromList : Sorter k -> List ( k, v ) -> Dict k v
Convert an association list into a dictionary.