Concepts

Here is a list of all concepts with brief descriptions:

Naria
Nasync
RSafeGraphExecutor
RSafeWorkerExecutor
REqualityComparable	Type that supports == and != (required for change detection)
RInvocableR	Anything that can be invoked with Args... and returns convertible-to-Ret
RListSource
RListSourceOf
RObservable	A read-only observable: has .get() and exposes its value_type
RPropertyValue	Type usable as a Property value:
RReactiveNode	Type that participates in the reactive graph: inherits from aria::reactive::Node
RReadOnlyReactive	A reactive cell that can be read and observed, but not written: exactly the surface a one-way (VM→View) binding needs
RReadOnlyReactiveOf	ReadOnlyReactive pinned to a specific value type — the constraint for the typed scalar binders (bind_text_oneway wants value_type to be exactly std::string, bind_visible wants bool, ...)
RReadOnlyReactiveOptional	A ReadOnlyReactive whose value_type is some std::optional<U> — the shape of AsyncCommand::last_result, and the constraint for BindingEngine::bind_optional_text