delete IsUnique

docs/reference.md

@@ -326,20 +326,6 @@ Note: `GroupBy` sorts iterable before grouping. If you pass key function, eg `Gr
 
 ```
 
-## IsUnique
-
-```py
->>> [0, 1, 2, 3] | IsUnique()
-True
->>> [0, 1, 1, 3] | IsUnique()
-False
->>> '0123' | IsUnique(int)
-True
->>> '0113' | IsUnique(int)
-False
-
-```
-
 ## ReduceByKey
 
 ```py

pipe21.py

@@ -38,7 +38,6 @@ class Take         (B): __ror__ = lambda self, it: it | Slice(self.f) | Pipe(tup
 class Chunked      (B): __ror__ = lambda self, it: iter(functools.partial(lambda n, i: i | Take(n), self.f, iter(it)), ())
 class Sorted       (B): __ror__ = lambda self, it: sorted(it, **self.kw)
 class GroupBy      (B): __ror__ = lambda self, it: it | Sorted(key=self.f) | Pipe(itertools.groupby, key=self.f)
-class IsUnique     (B): __ror__ = lambda self, seq: len(seq) == len(set(seq if self.f is None else map(self.f, seq)))
 class ReduceByKey  (B): __ror__ = lambda self, it: it | GroupBy(lambda kv: kv[0]) | MapValues(lambda kv: kv | Values() | Reduce(self.f)) | Pipe(list)
 class Apply        (B): __ror__ = lambda self, x: x | Exec(self.f, x)
 class StarPipe     (B): __ror__ = lambda self, x: self.f(*x)

tests/pipe_test.py

@@ -300,18 +300,6 @@ def test_star_flatmap(it, f, expected):
     assert it | StarFlatMap(f) | Pipe(list) == expected
 
 
-@pytest.mark.parametrize(
-    ('seq', 'key', 'expected'), [
-        ([0, 1, 2, 3], None, True),
-        ([0, 1, 1, 3], None, False),
-        ('0123', int, True),
-        ('0113', int, False),
-    ],
-)
-def test_is_unique(seq, key, expected):
-    assert seq | IsUnique(key) == expected
-
-
 @pytest.mark.parametrize(
     ('it', 'kw'), [
         ([3, 5, 1, 0], {}),