Returns a Dict with only succesful values, resulting from the application of a given function.

boxedDict = Dict.fromList [("one",Integer 1), ("two",Str "b"), ("three",Str "c")] |> Dictionary


filterMap tryString boxedDict == Dict.fromList [("three",Str "b"), ("two",Str "c")]
filterMap tryBool (Dictionary Dict.empty) == Dict.fromList []
filterMap tryBool (Double 3.01) == Dict.fromList []

Get the value associated with a key. Successful only if found, and the given function could be applied to it.

boxedDict = Dictionary (Dict.fromList [("one", Integer 1), ("two", Double 3.03)])


mapGet asBool "two" boxedDict == Nothing
mapGet asInt "one"  boxedDict == Just 1

Both Integer and Double will be able to pass as Float

Create an empty dictionary.

Create a boxed dictionary with one key-value pair.

Insert a key-value pair into a Boxed as a dictionary. Succesful even if the Boxed target is not even currently holding a dictionary.

boxedDict = Dictionary (Dict.fromList [("one", Str "b"), ("two", Double 3.03)])


insert "tree" (Integer 1) boxedDict ==  Dictionary (Dict.fromList [("one", Str "b"), ("tree", Integer 1), ("two", Double 3.03)])
insert "tree" (Integer 1) (Str "placeholder")  ==  Dictionary (Dict.fromList [("tree", Integer 1)])

Update the value of a boxed dictionary for a specific key with a given function.

boxedDict = Dictionary (Dict.fromList [("one", Str "b"), ("two", Double 3.03)])


modifier = always (Just (Boolean False))


update "two" modifier boxedDict ==  Dictionary (Dict.fromList [("one", Str "b"), ("two", Boolean False)])

Remove a key-value pair from a boxed dictionary.

boxedDict = Dictionary (Dict.fromList [("one", Str "b"), ("two", Double 3.03)])


remove "one" boxedDict  ==  Dictionary (Dict.fromList [("two", Double 3.03)])
remove "three" (Integer 1) == Dictionary (Dict.fromList [])

Apply a given function to a boxed dictionary.

boxedDict = Dictionary (Dict.fromList [("one", Str "b"), ("two", Double 3.03)])


apply (Dict.get "two") boxedDict == Just (Double 3.03)
apply (Dict.member "one") boxedDict == True
apply Dict.size boxedDict == 2
apply Dict.isEmpty (Str "d") == True
apply (Dict.map tryString) boxedDict == Dict.fromList [("one",Just "b"),("two",Nothing)]