Variant class

A Variant is structured using a Map structure.

Only one field key and value is needed to specify the chosen variant and value.

var variant = Variant.of_the_map({
    'blue': Nat(555)
});

For variant types without associated values such as: variant {install; reinstall; upgrade}, the field value is the Null type.

var variant = Variant.of_the_map({
    'upgrade': Null()
});
Inheritance

Constructors

Variant({dynamic type_mode = false})

Properties

entries → Iterable<MapEntry<int, CandidType>>
The map entries of this.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
isEmpty → bool
Whether there is no key/value pair in the map.
no setterinherited
isNotEmpty → bool
Whether there is at least one key/value pair in the map.
no setterinherited
keys → Iterable<int>
The keys of this.
no setterinherited
length → int
The number of key/value pairs in the map.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
type_mode → bool
finalinherited
values → Iterable<CandidType>
The values of this.
no setterinherited

Methods

addAll(Map<int, CandidType> other) → void
Adds all key/value pairs of other to this map.
inherited
addEntries(Iterable<MapEntry<int, CandidType>> newEntries) → void
Adds all key/value pairs of newEntries to this map.
inherited
cast<RK, RV>() → Map<RK, RV>
Provides a view of this map as having RK keys and RV instances, if necessary.
inherited
clear() → void
Removes all entries from the map.
inherited
containsKey(dynamic key) → bool
Whether this map contains the given key.
inherited
containsValue(Object? value) → bool
Whether this map contains the given value.
inherited
forEach(void action(int key, CandidType value)) → void
Applies action to each key/value pair of the map.
inherited
map<K2, V2>(MapEntry<K2, V2> transform(int key, CandidType value)) → Map<K2, V2>
Returns a new map where all entries of this map are transformed by the given convert function.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
putIfAbsent(int key, CandidType ifAbsent()) → CandidType
Look up the value of key, or add a new entry if it isn't there.
inherited
remove(Object? key) → CandidType?
Removes key and its associated value, if present, from the map.
inherited
removeWhere(bool test(int key, CandidType value)) → void
Removes all entries of this map that satisfy the given test.
inherited
toString() → String
A string representation of this object.
inherited
update(int key, CandidType update(CandidType value), {CandidType ifAbsent()?}) → CandidType
Updates the value for the provided key.
inherited
updateAll(CandidType update(int key, CandidType value)) → void
Updates all values.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited
operator [](dynamic key) → CandidType?
The value for the given key, or null if key is not in the map.
inherited
operator []=(dynamic key, CandidType value) → void
Associates the key with the given value.

Static Methods

of_the_map(Map<dynamic, CandidType> variant_map, {dynamic type_mode = false}) → dynamic

Constants

type_code → const int