def example_2():
def f(list_of_lists):
return [[v * v for v in list_of_lists[0]]]
x = Stream("x")
y = many_to_many_stateless(f, [x], 1)[0]
x.extend([5, 11])
print_stream_recent(x)
print_stream_recent(y)
return
def example_1():
print "example_1"
print "Calling signature:"
print "many_to_many_stateless(f, in_streams, num_out_streams, state=None, call_streams=None)"
print "Returns a list of num_out_streams streams."
print "in_streams is a list of streams."
print "List function: f(lists) where lists is a list of lists. "
print "f() returns a list of num_out_streams lists. \n"
print "In this example, many_to_many_stateless() returns two streams: multiples and nonmultiples."
print "The input streams are summed element by element;"
print "if this sum is a multiple of factor(=2), then the sum appears in multiples"
print "and otherwise it appears in nonmultiples."
print "The input streams are x and y."
factor = 2
def f(lists):
r = map(sum, zip(*lists))
return [filter(lambda v: v % factor == 0, r), filter(lambda v: v % factor != 0, r)]
x = Stream("x")
y = Stream("y")
list_of_two_streams = many_to_many_stateless(f, [x, y])
multiples, nonmultiples = list_of_two_streams
multiples.set_name("multiples")
nonmultiples.set_name("nonmultiples")
x.extend([5, 11])
y.extend([2, 4, 5])
print ""
print "FIRST STEP"
# Element by element sum of x and y is [5+2, 11+4].
# Since these values are odd, they appear in nonmultiples,
# and multiples is empty.
print_streams_recent([x, y, multiples, nonmultiples])
print ""
print "SECOND STEP"
x.extend([9, 15, 19, 8, 20])
y.extend([1, 3, 7])
print_streams_recent([x, y, multiples, nonmultiples])
return
