Poll: type of Base
Import: import Base
Lines 40-45 of Base/base.bend: https://jend.leeeet.dev/read.txt?path=Base/base.bend&start_line=40&end_line=45

import Base

# What a try_ operation answers: Ready{x}, x what its blocking twin answers,
# or Wait{rest} once ms milliseconds pass first (0: at once), rest what did
# not happen (the value or the bytes not sent).
type Poll<a, b, -A: Kind(a), -R: Kind(b)> is Kind(a <&> b):
  Ready{value: A}
  Wait{rest: R}

Uses (0):