def flat_map_delay_2(self) -> None:
v = 13
w = 29
x = 17
f = _ + w
g = _ + x
t = IO.delay(f, v).flat_map(lambda a: IO.delay(g, a))
t.attempt.should.contain(v + w + x)
def flat_map_delay(self) -> None:
v = 13
w = 29
x = 17
f = _ + x
t = IO.delay(f, v).flat_map(L(IO.now)(_ + w))
t.attempt.should.contain(v + w + x)
def location(self) -> None:
IO.debug = True
IOException.remove_pkgs = List('fn')
def fail(a: int) -> None:
raise Exception(str(a))
f = lambda a: a + 2
g = lambda a, b: IO.now(a + b)
t = IO.delay(f, 1).flat_map(L(g)(_, 3))
t2 = t.map(fail)
exc = t2._attempt().value
code = (exc.location / _.code_context) | ''
code[0].should.contain('t.map(fail)')
def and_then(self) -> None:
v = 7
f = lambda: v
t = IO.now(1).and_then(IO.delay(f))
t.attempt.should.contain(v)
def sequence(self) -> None:
f = lambda: 3
t = List(IO.now(1), IO.now(2), IO.delay(f)).sequence(IO)
t.attempt.should.equal(Right(List(1, 2, 3)))
def delay(self) -> None:
v = 13
w = 29
f = _ + v
t = IO.delay(f, w)
t.run().should.equal(v + w)