def inner(*args, **kargs):
a = d.get(hash((args, kargs)))
if a is None:
a = d[hash((args, kargs))] = []
yield from a
for x in drop(len(a), f(*args, **kargs)):
a.append(x)
yield x
def test_fib_infinite_stream(self):
from operator import add
f = Stream()
fib = f << [0, 1] << iters.map(add, f, iters.drop(1, f))
self.assertEqual([0,1,1,2,3,5,8,13,21,34], list(iters.take(10, fib)))
self.assertEqual(6765, fib[20])
self.assertEqual([832040,1346269,2178309,3524578,5702887], fib[30:35])
def test_fib_infinite_stream(self):
from operator import add
f = Stream()
fib = f << [0, 1] << iters.map(add, f, iters.drop(1, f))
self.assertEqual([0,1,1,2,3,5,8,13,21,34], list(iters.take(10, fib)))
self.assertEqual(6765, fib[20])
self.assertEqual([832040,1346269,2178309,3524578,5702887], list(fib[30:35]))
# 35 elements should be already evaluated
self.assertEqual(fib.cursor(), 35)
def test_fib_infinite_stream(self):
from operator import add
f = Stream()
fib = f << [0, 1] << iters.map(add, f, iters.drop(1, f))
self.assertEqual([0,1,1,2,3,5,8,13,21,34], list(iters.take(10, fib)))
self.assertEqual(6765, fib[20])
self.assertEqual([832040,1346269,2178309,3524578,5702887], list(fib[30:35]))
# 35 elements should be already evaluated
self.assertEqual(fib.cursor(), 35)
def test_drop(self):
self.assertEqual([3, 4], list(iters.drop(3, range(5))))
self.assertEqual([], list(iters.drop(10, range(2))))
def test_drop(self):
self.assertEqual([3,4], list(iters.drop(3, range(5))))
self.assertEqual([], list(iters.drop(10, range(2))))
