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core/ui: add note on yield usage
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@ -289,6 +289,7 @@ class Layout(Component):
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"""Task that is waiting for the user input."""
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touch = loop.wait(io.TOUCH)
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while True:
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# Using `yield` instead of `await` to avoid allocations.
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event, x, y = yield touch
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self.dispatch(event, x, y)
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# We dispatch a render event right after the touch. Quick and dirty
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@ -314,7 +315,7 @@ class Layout(Component):
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while True:
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# Wait for a couple of ms and render the layout again. Because
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# components use re-paint marking, they do not really draw on the
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# display needlessly.
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# display needlessly. Using `yield` instead of `await` to avoid allocations.
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# TODO: remove the busy loop
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yield sleep
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self.dispatch(RENDER, 0, 0)
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