UViewerConfigRole class

Overview

This is an union object to improve safety and convenience of objects using Enum.

Enum provides a very powerful type for a specific group of data, but at the same time it means a loss of flexibility: values not defined in Enum are either completely ignored or an exception is thrown if parsing fails. This union object exists to solve that problem.

This union object handles the KnownValue, a known enum value defined in Lexicon, and the UnknownValue, an unknown string value not defined in Lexicon. In other words, it can handle unknown values while enjoying the type safety of Enum.

Usage

// use when syntax.
final value = object.when(
  knownValue: (data) => data, // => KnownViewerConfigRole
  unknownValue: (data) => data, // => String
);

// or simpler way.
if (object.isKnownValue) {
  print(object.knownValue); // => KnownViewerConfigRole or null
} else if (object.isUnknownValue) {
  print(object.unknownValue); // => String or null
}

Implementers

Available extensions

$UViewerConfigRoleExtension

Annotations

@freezed

Constructors

UViewerConfigRole.knownValue({required KnownViewerConfigRole data}): const

factory
UViewerConfigRole.unknownValue({required String data}): const

factory

Properties

data → Object: no setterinherited
hashCode → int: The hash code for this object.
no setterinherited
isKnownValue → bool: Available on UViewerConfigRole, provided by the $UViewerConfigRoleExtension extension
Returns true if this is known value, otherwise false.
no setter
isNotKnownValue → bool: Available on UViewerConfigRole, provided by the $UViewerConfigRoleExtension extension
Returns true if this is not known value, otherwise false.
no setter
isNotUnknownValue → bool: Available on UViewerConfigRole, provided by the $UViewerConfigRoleExtension extension
Returns true if this is not unknown value, otherwise false.
no setter
isUnknownValue → bool: Available on UViewerConfigRole, provided by the $UViewerConfigRoleExtension extension
Returns true if this is unknown value, otherwise false.
no setter
knownValue → KnownViewerConfigRole: Available on UViewerConfigRole, provided by the $UViewerConfigRoleExtension extension
Returns known value.
no setter
knownValueOrNull → KnownViewerConfigRole?: Available on UViewerConfigRole, provided by the $UViewerConfigRoleExtension extension
Returns known value if this data is known, otherwise null.
no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
unknownValue → String: Available on UViewerConfigRole, provided by the $UViewerConfigRoleExtension extension
Returns unknown value.
no setter
unknownValueOrNull → String?: Available on UViewerConfigRole, provided by the $UViewerConfigRoleExtension extension
Returns unknown value if this data is unknown, otherwise null.
no setter

Methods

map<TResult extends Object?>({required TResult knownValue(UViewerConfigRoleKnownValue value), required TResult unknownValue(UViewerConfigRoleUnknownValue value)}) → TResult: inherited
mapOrNull<TResult extends Object?>({TResult? knownValue(UViewerConfigRoleKnownValue value)?, TResult? unknownValue(UViewerConfigRoleUnknownValue value)?}) → TResult?: inherited
maybeMap<TResult extends Object?>({TResult knownValue(UViewerConfigRoleKnownValue value)?, TResult unknownValue(UViewerConfigRoleUnknownValue value)?, required TResult orElse()}) → TResult: inherited
maybeWhen<TResult extends Object?>({TResult knownValue(KnownViewerConfigRole data)?, TResult unknownValue(String data)?, required TResult orElse()}) → TResult: inherited
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toJson() → String: Available on UViewerConfigRole, provided by the $UViewerConfigRoleExtension extension
Returns string value.
toString() → String: A string representation of this object.
inherited
when<TResult extends Object?>({required TResult knownValue(KnownViewerConfigRole data), required TResult unknownValue(String data)}) → TResult: inherited
whenOrNull<TResult extends Object?>({TResult? knownValue(KnownViewerConfigRole data)?, TResult? unknownValue(String data)?}) → TResult?: inherited

Operators

operator ==(Object other) → bool: The equality operator.
inherited