async def main():
in_ch = chan()
in_ch.close()
result_ch = c.reduce(
xf.multi_arity(lambda: 100, xf.identity, lambda x, y: x + y),
in_ch)
self.assertEqual(await result_ch.get(), 100)
async def main():
in_ch = c.to_chan(range(4))
def rf(result, val):
if val == 2:
return xf.reduced(result + 2)
return result + val
result_ch = c.reduce(rf, 100, in_ch)
self.assertEqual(await result_ch.get(), 103)
async def main():
in_ch = c.to_chan(range(4))
with self.assertRaises(TypeError):
c.reduce(xf.multi_arity(None, xf.identity, lambda x, y: x + y),
in_ch)
async def main():
in_ch = c.to_chan(range(4))
result_ch = c.reduce(lambda x, y: x + y, 100, in_ch)
self.assertEqual(await result_ch.get(), 106)
async def main():
ch = chan()
ch.close()
result_ch = c.reduce(lambda: None, 'init', ch)
self.assertEqual(await result_ch.get(), 'init')