add methods repeat / times

README.md

@@ -432,7 +432,7 @@ R.propEq(1, 'v1', {'v1': 1}) # True
 - [ ] reduceWhile
 - [x] 0.1.2 reject
 - [ ] remove
-- [ ] repeat
+- [x] repeat
 - [ ] replace
 - [x] 0.1.2 reverse
 - [ ] scan
@@ -474,7 +474,7 @@ R.subtract(date(1,2,3), date(1,2,3)) # float('nan)
 - [x] 0.1.2 tap
 - [ ] test
 - [ ] thunkify
-- [ ] times
+- [x] times
 - [ ] toLower
 - [ ] toPairs
 - [ ] toPairsIn

ramda/__init__.py

@@ -74,6 +74,7 @@
 from .reduced import reduced
 from .reduceRight import reduceRight
 from .reject import reject
+from .repeat import repeat
 from .reverse import reverse
 from .slice import slice
 from .sort import sort
@@ -86,6 +87,7 @@
 from .take import take
 from .takeWhile import takeWhile
 from .tap import tap
+from .times import times
 from .toString import toString
 from .union import union
 from .unionWith import unionWith

ramda/repeat.py

@@ -0,0 +1,5 @@
+from .always import always
+from .private._curry2 import _curry2
+from .times import times
+
+repeat = _curry2(lambda value, n: times(always(value), n))

ramda/times.py

@@ -0,0 +1,20 @@
+from math import isnan
+
+from .private._curry2 import _curry2
+from .private._helper import toNumber
+
+
+def inner_times(fn, n):
+  length = toNumber(n)
+  idx = 0
+
+  if length < 0 or isnan(length):
+    raise ValueError('n must be a non-negative number')
+  arr = []
+  while idx < length:
+    arr.append(fn(idx))
+    idx += 1
+  return arr
+
+
+times = _curry2(inner_times)

test/test_repeat.py

@@ -0,0 +1,20 @@
+
+import unittest
+
+import ramda as R
+
+"""
+https://github.com/ramda/ramda/blob/master/test/repeat.js
+"""
+
+
+class TestRepeat(unittest.TestCase):
+  def test_returns_a_lazy_list_of_identical_values(self):
+    self.assertEqual([0, 0, 0, 0, 0], R.repeat(0, 5))
+
+  def test_can_accept_any_value_including_None(self):
+    self.assertEqual([None, None, None], R.repeat(None, 3))
+
+
+if __name__ == '__main__':
+  unittest.main()

test/test_times.py

@@ -0,0 +1,24 @@
+
+import unittest
+
+import ramda as R
+
+"""
+https://github.com/ramda/ramda/blob/master/test/times.js
+"""
+
+
+class TestTimes(unittest.TestCase):
+  def test_takes_a_map_func(self):
+    self.assertEqual([0, 1, 2, 3, 4], R.times(R.identity, 5))
+    self.assertEqual([0, 2, 4, 6, 8], R.times(R.multiply(2), 5))
+
+  def test_throws_if_second_argument_is_not_a_valid_array_length(self):
+    with self.assertRaises(ValueError):
+      R.times(3)('cheers!')
+    with self.assertRaises(ValueError):
+      R.times(R.identity, -1)
+
+
+if __name__ == '__main__':
+  unittest.main()