Reactive

The Reactive class implements reactivity.

Reactive `class` ¶

def __init__(
    self,
    default,
    *,
    layout=False,
    repaint=True,
    init=False,
    always_update=False,
    compute=True
):

Bases: Generic[ReactiveType]

Reactive descriptor.

Parameter	Default	Description
`default` `ReactiveType \| Callable[[], ReactiveType]`	required	A default value or callable that returns a default.
`layout` `bool`	`False`	Perform a layout on change.
`repaint` `bool`	`True`	Perform a repaint on change.
`init` `bool`	`False`	Call watchers on initialize (post mount).
`always_update` `bool`	`False`	Call watchers even when the new value equals the old value.
`compute` `bool`	`True`	Run compute methods when attribute is changed.

Raised when an attribute has public and private compute methods.

def __init__(
    self,
    default,
    *,
    layout=False,
    repaint=True,
    init=True,
    always_update=False
):

Bases: Reactive[ReactiveType]

Create a reactive attribute.

Parameter	Default	Description
`default` `ReactiveType \| Callable[[], ReactiveType]`	required	A default value or callable that returns a default.
`layout` `bool`	`False`	Perform a layout on change.
`repaint` `bool`	`True`	Perform a repaint on change.
`init` `bool`	`True`	Call watchers on initialize (post mount).
`always_update` `bool`	`False`	Call watchers even when the new value equals the old value.

def __init__(self, default, init=True, always_update=False):

Bases: Reactive[ReactiveType]

Create a reactive attribute (with no auto-refresh).

Parameter	Default	Description
`default` `ReactiveType \| Callable[[], ReactiveType]`	required	A default value or callable that returns a default.
`init` `bool`	`True`	Call watchers on initialize (post mount).
`always_update` `bool`	`False`	Call watchers even when the new value equals the old value.