TopicPatterns extension

Adds pattern-matching-related methods to Topic.

on

Methods

map<TResult extends Object?>(TResult $default(_Topic value)) → TResult

Available on Topic, provided by the TopicPatterns extension

A switch-like method, using callbacks.
mapOrNull<TResult extends Object?>(TResult? $default(_Topic value)?) → TResult?

Available on Topic, provided by the TopicPatterns extension

A variant of map that fallback to returning null.
maybeMap<TResult extends Object?>(TResult $default(_Topic value)?, {required TResult orElse()}) → TResult

Available on Topic, provided by the TopicPatterns extension

A variant of map that fallback to returning orElse.
maybeWhen<TResult extends Object?>(TResult $default(String id, String? bookId, String domainId, String? parentTopicId, String title, int depth, int sortOrder, int? pageStart, int? pageEnd, String? curriculumLevelId, List<Topic> children)?, {required TResult orElse()}) → TResult

Available on Topic, provided by the TopicPatterns extension

A variant of when that fallback to an orElse callback.
when<TResult extends Object?>(TResult $default(String id, String? bookId, String domainId, String? parentTopicId, String title, int depth, int sortOrder, int? pageStart, int? pageEnd, String? curriculumLevelId, List<Topic> children)) → TResult

Available on Topic, provided by the TopicPatterns extension

A switch-like method, using callbacks.
whenOrNull<TResult extends Object?>(TResult? $default(String id, String? bookId, String domainId, String? parentTopicId, String title, int depth, int sortOrder, int? pageStart, int? pageEnd, String? curriculumLevelId, List<Topic> children)?) → TResult?

Available on Topic, provided by the TopicPatterns extension

A variant of when that fallback to returning null