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added reactive to reference docs

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Will McGugan
2022-09-06 16:43:08 +01:00
parent 43c45158dd
commit 2128ea62a5
3 changed files with 18 additions and 26 deletions
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docs/reference/reactive.md Normal file
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::: textual.reactive.Reactive

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docs/tutorial.md
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A recurring theme in Textual is that you rarely need to explicitly update a widget. It is possible: you can call [`refresh()`][textual.widget.Widget.refresh] to display new data. However, Textual prefers to do this automatically via _reactive_ attributes.
You can declare a reactive attribute with `textual.reactive.Reactive`. Let's use this feature to create a timer that displays elapsed time and keeps it updated.
You can declare a reactive attribute with [Reactive][textual.reactive.Reactive]. Let's use this feature to create a timer that displays elapsed time and keeps it updated.
```python title="stopwatch04.py" hl_lines="1 5 12-27"
--8<-- "docs/examples/tutorial/stopwatch05.py"