@react
def bla():
    # to an output.
    x = something_that_takes_long()
    x += w.get_signal('slider2')
    w.set_output('show', 1 - x)
    # todo: set_output, or return and connect somehow?
dataset/ETHPy150Open zoofIO/flexx/exp/reactive.py/bla/swapped operands of `-`