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# Mode / Unicast
# Launch the server in #unicast #mode and use `q.client` to manage client-local state.
# ---
from h2o_wave import main, app, Q, ui
@app('/demo')
async def serve(q: Q):
if not q.client.initialized:
q.client.count = 0
q.page['example'] = ui.form_card(box='1 1 2 1', items=[
ui.button(name='increment', label=f'Count={q.client.count}')
])
q.client.initialized = True
if q.args.increment:
q.client.count += 1
q.page['example'].increment.label = f'Count={q.client.count}'
await q.page.save()
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