def test_zipwith(self):
zipper = op.zipwith(operator.add)
self.assertEqual([10,11,12], list(zipper([0,1,2], itertools.repeat(10))))
zipper = op.zipwith(_ + _)
self.assertEqual([10,11,12], list(zipper([0,1,2], itertools.repeat(10))))
zipper = F() << list << op.zipwith(_ + _)
self.assertEqual([10,11,12], zipper([0,1,2], itertools.repeat(10)))
def test_zipwith(self):
zipper = op.zipwith(operator.add)
self.assertEqual([10,11,12], list(zipper([0,1,2], itertools.repeat(10))))
zipper = op.zipwith(_ + _)
self.assertEqual([10,11,12], list(zipper([0,1,2], itertools.repeat(10))))
zipper = F() << list << op.zipwith(_ + _)
self.assertEqual([10,11,12], zipper([0,1,2], itertools.repeat(10)))
print(ioMonad)
def createIO(word) -> IO:
return IO(word)
def toUpper(word) -> IO:
return IO(word.upper())
def appendValue(word) -> IO:
return IO(word + " at " + str(datetime.now().microsecond))
foo = createIO("Hello") | (lambda word: toUpper(word) |
(lambda contents: appendValue(contents)))
time.sleep(2)
print("now:%s" % str(datetime.now().microsecond))
time.sleep(2)
print(foo.value)
from fn import _
from fn.op import zipwith
from itertools import repeat
assert list(map(_ * 2, range(5))) == [0, 2, 4, 6, 8]
assert list(filter(_ < 10, [9, 10, 11])) == [9]
assert list(zipwith(_ + _)([0, 1, 2], repeat(10))) == [10, 11, 12]
# -*- coding:utf-8 -*- from pprint import pprint from fn import _ from fn.op import zipwith from itertools import repeat """ 1、Scala-style lambdas definition """ pprint(list(map(_ * 2, range(5)))) # [0, 2, 4, 6, 8] pprint(list(filter(_ < 10, [9, 10, 11]))) # [9] pprint(list(zipwith(_ + _)([0, 1, 2], repeat(10)))) # [10, 11, 12] # Attention "_" pprint(_ + 2) # "(x1) => (x1 + 2)" pprint(_ + _ * _) # "(x1, x2, x3) => (x1 + (x2 * x3))" """ 2、Persistent data structures """
from operator import add
from fn import Stream
# f = Stream()
#
# fib = f<<[0,1]<<map(add,f,drop(1,f))
#
# print(list(take(10,fib)))
#
# print(fib[20])
#
# print(list(fib[30:35]))
from fn.func import curried
from fn.op import zipwith
@curried
def sum5(a, b, c, d, e):
return a + b + c + d + e
print(sum5(1)(2)(3)(4)(5))
print(sum5(1, 2, 3)(4, 5))
from itertools import repeat
print(list(zipwith(_ + _)([0, 1, 2], repeat(10))))