Added enumerable order & added array & removed collection

example/custom/query/main.py

@@ -1,9 +1,8 @@
 from cpl.core.console import Console
 from cpl.core.utils.benchmark import Benchmark
-from cpl.query.collection import Collection
 from cpl.query.enumerable import Enumerable
-from cpl.query.list import List
 from cpl.query.immutable_list import ImmutableList
+from cpl.query.list import List
 from cpl.query.set import Set
 
 
@@ -24,11 +23,23 @@ def _default():
     s.add(1)
     Console.write_line(s)
 
+    data = Enumerable(
+        [
+            {"name": "Alice", "age": 30},
+            {"name": "Dave", "age": 35},
+            {"name": "Charlie", "age": 25},
+            {"name": "Bob", "age": 25},
+        ]
+    )
+
+    Console.write_line(data.order_by(lambda x: x["age"]).to_list())
+    Console.write_line(data.order_by(lambda x: x["age"]).then_by(lambda x: x["name"]).to_list())
+    Console.write_line(data.order_by(lambda x: x["name"]).then_by(lambda x: x["age"]).to_list())
+
 
 def t_benchmark(data: list):
     Benchmark.all("Enumerable", lambda: Enumerable(data).where(lambda x: x % 2 == 0).select(lambda x: x * 2).to_list())
     Benchmark.all("Set", lambda: Set(data).where(lambda x: x % 2 == 0).select(lambda x: x * 2).to_list())
-    Benchmark.all("Collection", lambda: Collection(data).where(lambda x: x % 2 == 0).select(lambda x: x * 2).to_list())
     Benchmark.all("List", lambda: List(data).where(lambda x: x % 2 == 0).select(lambda x: x * 2).to_list())
     Benchmark.all(
         "ImmutableList", lambda: ImmutableList(data).where(lambda x: x % 2 == 0).select(lambda x: x * 2).to_list()
@@ -39,7 +50,7 @@ def t_benchmark(data: list):
 def main():
     N = 10_000_000
     data = list(range(N))
-    t_benchmark(data)
+    #t_benchmark(data)
 
     Console.write_line()
     _default()

src/cpl-query/cpl/query/__init__.py

@@ -1 +1,7 @@
-
+from .array import Array
+from .enumerable import Enumerable
+from .immutable_list import ImmutableList
+from .immutable_set import ImmutableSet
+from .list import List
+from .ordered_enumerable import OrderedEnumerable
+from .set import Set

src/cpl-query/cpl/query/array.py

@@ -0,0 +1,44 @@
+from typing import Generic, Iterable, Optional
+
+from cpl.core.typing import T
+from cpl.query.list import List
+from cpl.query.enumerable import Enumerable
+
+
+class Array(Generic[T], List[T]):
+    def __init__(self, length: int, source: Optional[Iterable[T]] = None):
+        List.__init__(self, source)
+        self._length = length
+
+    @property
+    def length(self) -> int:
+        return len(self._source)
+
+    def add(self, item: T) -> None:
+        if self._length == self.length:
+            raise IndexError("Array is full")
+        self._source.append(item)
+
+    def extend(self, items: Iterable[T]) -> None:
+        if self._length == self.length:
+            raise IndexError("Array is full")
+        self._source.extend(items)
+
+    def insert(self, index: int, item: T) -> None:
+        if index < 0 or index > self.length:
+            raise IndexError("Index out of range")
+        self._source.insert(index, item)
+
+    def remove(self, item: T) -> None:
+        self._source.remove(item)
+
+    def pop(self, index: int = -1) -> T:
+        return self._source.pop(index)
+
+    def clear(self) -> None:
+        self._source.clear()
+
+    def to_enumerable(self) -> "Enumerable[T]":
+        from cpl.query.enumerable import Enumerable
+
+        return Enumerable(self._source)

src/cpl-query/cpl/query/collection.py

@@ -1,173 +0,0 @@
-from itertools import islice, groupby
-from typing import Generic, Callable, Iterable, Iterator, Dict, Tuple, Optional
-
-from cpl.core.typing import T, R
-from cpl.query.list import List
-from cpl.query.typing import Predicate, K, Selector
-
-
-class Collection(Generic[T]):
-    def __init__(self, source: Iterable[T]):
-        self._source = source
-
-    def __iter__(self) -> Iterator[T]:
-        return iter(self._source)
-
-    @property
-    def length(self) -> int:
-        return sum(1 for _ in self._source)
-
-    def where(self, f: Predicate) -> "Collection[T]":
-        return Collection([x for x in self._source if f(x)])
-
-    def select(self, f: Selector) -> "Collection[R]":
-        return Collection([f(x) for x in self._source])
-
-    def select_many(self, f: Callable[[T], Iterable[R]]) -> "Collection[R]":
-        return Collection([y for x in self._source for y in f(x)])
-
-    def take(self, count: int) -> "Collection[T]":
-        return Collection(islice(self._source, count))
-
-    def skip(self, count: int) -> "Collection[T]":
-        return Collection(islice(self._source, count, None))
-
-    def take_while(self, f: Predicate) -> "Collection[T]":
-        result = []
-        for x in self._source:
-            if f(x):
-                result.append(x)
-            else:
-                break
-        return Collection(result)
-
-    def skip_while(self, f: Predicate) -> "Collection[T]":
-        it = iter(self._source)
-        for x in it:
-            if not f(x):
-                return Collection([x] + list(it))
-        return Collection([])
-
-    def distinct(self) -> "Collection[T]":
-        seen = set()
-        return Collection([x for x in self._source if not (x in seen or seen.add(x))])
-
-    def union(self, other: Iterable[T]) -> "Collection[T]":
-        return self.concat(other).distinct()
-
-    def intersect(self, other: Iterable[T]) -> "Collection[T]":
-        other_set = set(other)
-        return Collection([x for x in self._source if x in other_set])
-
-    def except_(self, other: Iterable[T]) -> "Collection[T]":
-        other_set = set(other)
-        return Collection([x for x in self._source if x not in other_set])
-
-    def concat(self, other: Iterable[T]) -> "Collection[T]":
-        return Collection(self._source) + list(other)
-
-    def count(self) -> int:
-        return len(list(self._source))
-
-    def sum(self, f: Optional[Selector] = None) -> R:
-        return sum([f(x) for x in self._source]) if f else sum(self._source)  # type: ignore
-
-    def min(self, f: Optional[Selector] = None) -> R:
-        return min([f(x) for x in self._source]) if f else min(self._source)  # type: ignore
-
-    def max(self, f: Optional[Selector] = None) -> R:
-        return max([f(x) for x in self._source]) if f else max(self._source)  # type: ignore
-
-    def average(self, f: Optional[Callable[[T], float]] = None) -> float:
-        values = [f(x) for x in self._source] if f else list(self._source)
-        return sum(values) / len(values) if values else 0.0
-
-    def aggregate(self, func: Callable[[R, T], R], seed: Optional[R] = None) -> R:
-        it = iter(self._source)
-        if seed is None:
-            acc = next(it)  # type: ignore
-        else:
-            acc = seed
-        for x in it:
-            acc = func(acc, x)
-        return acc
-
-    def any(self, f: Optional[Predicate] = None) -> bool:
-        return any(f(x) if f else x for x in self._source)
-
-    def all(self, f: Predicate) -> bool:
-        return all(f(x) for x in self._source)
-
-    def contains(self, value: T) -> bool:
-        return value in self._source
-
-    def sequence_equal(self, other: Iterable[T]) -> bool:
-        return list(self._source) == list(other)
-
-    def group_by(self, key_f: Callable[[T], K]) -> "Collection[Tuple[K, List[T]]]":
-        sorted_data = sorted(self._source, key=key_f)
-        return Collection([(key, list(group)) for key, group in groupby(sorted_data, key=key_f)])
-
-    def join(
-        self, inner: Iterable[R], outer_key: Callable[[T], K], inner_key: Callable[[R], K], result: Callable[[T, R], R]
-    ) -> "Collection[R]":
-        lookup: Dict[K, List[R]] = {}
-        for i in inner:
-            k = inner_key(i)
-            lookup.setdefault(k, []).append(i)
-        return Collection([result(o, i) for o in self._source for i in lookup.get(outer_key(o), [])])
-
-    def first(self, f: Optional[Predicate] = None) -> T:
-        if f:
-            for x in self._source:
-                if f(x):
-                    return x
-            raise ValueError("No matching element")
-        return next(iter(self._source))
-
-    def first_or_default(self, default: Optional[T] = None) -> Optional[T]:
-        return next(iter(self._source), default)
-
-    def last(self) -> T:
-        return list(self._source)[-1]
-
-    def single(self, f: Optional[Predicate] = None) -> T:
-        items = [x for x in self._source if f(x)] if f else list(self._source)
-        if len(items) != 1:
-            raise ValueError("Sequence does not contain exactly one element")
-        return items[0]
-
-    def to_list(self) -> List[T]:
-        return List(self._source)
-
-    def to_enumerable(self) -> "Enumerable[T]":
-        from cpl.query.enumerable import Enumerable
-
-        return Enumerable(self._source)
-
-    def to_dict(self, key_f: Callable[[T], K], value_f: Selector) -> Dict[K, R]:
-        return {key_f(x): value_f(x) for x in self._source}
-
-    def cast(self, t: Selector) -> "Collection[R]":
-        return Collection([t(x) for x in self._source])
-
-    def of_type(self, t: type) -> "Collection[T]":
-        return Collection([x for x in self._source if isinstance(x, t)])
-
-    def reverse(self) -> "Collection[T]":
-        return Collection(reversed(list(self._source)))
-
-    def zip(self, other: Iterable[R]) -> "Collection[Tuple[T, R]]":
-        return Collection(zip(self._source, other))
-
-    @staticmethod
-    def range(start: int, count: int) -> "Collection[int]":
-        return Collection(range(start, start + count))
-
-    @staticmethod
-    def repeat(value: T, count: int) -> "Collection[T]":
-        return Collection([value for _ in range(count)])
-
-    @staticmethod
-    def empty() -> "Collection[T]":
-        return Collection([])

src/cpl-query/cpl/query/enumerable.py

@@ -167,17 +167,13 @@ class Enumerable(Generic[T]):
 
     def to_list(self) -> "List[T]":
         from cpl.query.list import List
-        return List(self._source)
 
-    def to_collection(self) -> "Collection[T]":
-        from cpl.query.collection import Collection
-
-        return Collection(self._source)
+        return List(self)
 
     def to_set(self) -> "Set[T]":
         from cpl.query.set import Set
 
-        return Set(self._source)
+        return Set(self)
 
     def to_dict(self, key_f: Callable[[T], K], value_f: Selector) -> Dict[K, R]:
         return {key_f(x): value_f(x) for x in self._source}
@@ -194,6 +190,16 @@ class Enumerable(Generic[T]):
     def zip(self, other: Iterable[R]) -> "Enumerable[Tuple[T, R]]":
         return Enumerable(zip(self._source, other))
 
+    def order_by(self, key_selector: Callable[[T], K]) -> "OrderedEnumerable[T]":
+        from cpl.query.ordered_enumerable import OrderedEnumerable
+
+        return OrderedEnumerable(self._source, [(key_selector, False)])
+
+    def order_by_descending(self, key_selector: Callable[[T], K]) -> "OrderedEnumerable[T]":
+        from cpl.query.ordered_enumerable import OrderedEnumerable
+
+        return OrderedEnumerable(self._source, [(key_selector, True)])
+
     @staticmethod
     def range(start: int, count: int) -> "Enumerable[int]":
         return Enumerable(range(start, start + count))

src/cpl-query/cpl/query/immutable_list.py

@@ -6,40 +6,60 @@ from cpl.query.enumerable import Enumerable
 
 class ImmutableList(Generic[T], Enumerable[T]):
     def __init__(self, source: Optional[Iterable[T]] = None):
+        Enumerable.__init__(self, [])
         if source is None:
             source = []
+        elif not isinstance(source, list):
+            source = list(source)
 
-        Enumerable.__init__(self, source)
+        self.__source = source
 
     @property
-    def _items(self) -> list[T]:
-        return list(self._source)
+    def _source(self) -> list[T]:
+        return self.__source
+
+    @_source.setter
+    def _source(self, value: list[T]) -> None:
+        self.__source = value
 
     def __iter__(self) -> Iterator[T]:
-        return iter(self._items)
+        return iter(self._source)
 
     def __len__(self) -> int:
-        return len(self._items)
+        return len(self._source)
 
     def __getitem__(self, index: int) -> T:
-        return self._items[index]
+        return self._source[index]
 
     def __contains__(self, item: T) -> bool:
-        return item in self._items
+        return item in self._source
 
     def __repr__(self) -> str:
-        return f"List({self._items!r})"
+        return f"List({self._source!r})"
 
     @property
     def length(self) -> int:
-        return len(self._items)
+        return len(self._source)
+
+    def add(self, item: T) -> None:
+        self._source.append(item)
+
+    def extend(self, items: Iterable[T]) -> None:
+        self._source.extend(items)
+
+    def insert(self, index: int, item: T) -> None:
+        self._source.insert(index, item)
+
+    def remove(self, item: T) -> None:
+        self._source.remove(item)
+
+    def pop(self, index: int = -1) -> T:
+        return self._source.pop(index)
+
+    def clear(self) -> None:
+        self._source.clear()
 
     def to_enumerable(self) -> "Enumerable[T]":
         from cpl.query.enumerable import Enumerable
 
-        return Enumerable(self._items)
-
-    def to_collection(self) -> "Collection[T]":
-        from cpl.query.collection import Collection
-
-        return Collection(self._items)
+        return Enumerable(self._source)

src/cpl-query/cpl/query/immutable_set.py

@@ -6,11 +6,13 @@ from cpl.query.enumerable import Enumerable
 
 class ImmutableSet(Generic[T], Enumerable[T]):
     def __init__(self, source: Optional[Iterable[T]] = None):
+        Enumerable.__init__(self, [])
         if source is None:
             source = set()
+        elif not isinstance(source, set):
+            source = set(source)
 
         self.__source = source
-        Enumerable.__init__(self, [])
 
     @property
     def _source(self) -> set[T]:
@@ -41,4 +43,5 @@ class ImmutableSet(Generic[T], Enumerable[T]):
 
     def to_enumerable(self) -> "Enumerable[T]":
         from cpl.query.enumerable import Enumerable
-        return Enumerable(self._source)
+
+        return Enumerable(self._source)

src/cpl-query/cpl/query/list.py

@@ -1,66 +1,36 @@
-from typing import Generic, Iterable, Iterator, Optional
+from typing import Generic, Iterable, Optional
 
 from cpl.core.typing import T
+from cpl.query.immutable_list import ImmutableList
 from cpl.query.enumerable import Enumerable
 
 
-class List(Generic[T], Enumerable[T]):
+class List(Generic[T], ImmutableList[T]):
     def __init__(self, source: Optional[Iterable[T]] = None):
-        if source is None:
-            source = []
-
-        Enumerable.__init__(self, source)
-
-    @property
-    def _items(self) -> list[T]:
-        return list(self._source)
-
-    def __iter__(self) -> Iterator[T]:
-        return iter(self._items)
-
-    def __len__(self) -> int:
-        return len(self._items)
-
-    def __getitem__(self, index: int) -> T:
-        return self._items[index]
+        ImmutableList.__init__(self, source)
 
     def __setitem__(self, index: int, value: T) -> None:
-        self._items[index] = value
-
-    def __contains__(self, item: T) -> bool:
-        return item in self._items
-
-    def __repr__(self) -> str:
-        return f"List({self._items!r})"
-
-    @property
-    def length(self) -> int:
-        return len(self._items)
+        self._source[index] = value
 
     def add(self, item: T) -> None:
-        self._items.append(item)
+        self._source.append(item)
 
     def extend(self, items: Iterable[T]) -> None:
-        self._items.extend(items)
+        self._source.extend(items)
 
     def insert(self, index: int, item: T) -> None:
-        self._items.insert(index, item)
+        self._source.insert(index, item)
 
     def remove(self, item: T) -> None:
-        self._items.remove(item)
+        self._source.remove(item)
 
     def pop(self, index: int = -1) -> T:
-        return self._items.pop(index)
+        return self._source.pop(index)
 
     def clear(self) -> None:
-        self._items.clear()
+        self._source.clear()
 
     def to_enumerable(self) -> "Enumerable[T]":
         from cpl.query.enumerable import Enumerable
 
-        return Enumerable(self._items)
-
-    def to_collection(self) -> "Collection[T]":
-        from cpl.query.collection import Collection
-
-        return Collection(self._items)
+        return Enumerable(self._source)

src/cpl-query/cpl/query/ordered_enumerable.py

@@ -0,0 +1,40 @@
+from typing import Callable, List, Generic, Iterator
+from cpl.core.typing import T
+from cpl.query.enumerable import Enumerable
+from cpl.query.typing import K
+
+
+class OrderedEnumerable(Enumerable[T]):
+    def __init__(self, source, key_selectors: List[tuple[Callable[[T], K], bool]]):
+        super().__init__(source)
+        self._key_selectors = key_selectors
+
+    def __iter__(self) -> Iterator[T]:
+        def composite_key(x):
+            keys = []
+            for selector, descending in self._key_selectors:
+                k = selector(x)
+                keys.append((k, not descending))
+            return tuple(k if asc else _DescendingWrapper(k) for k, asc in keys)
+
+        return iter(sorted(self._source, key=composite_key))
+
+    def then_by(self, key_selector: Callable[[T], K]) -> "OrderedEnumerable[T]":
+        return OrderedEnumerable(self._source, self._key_selectors + [(key_selector, False)])
+
+    def then_by_descending(self, key_selector: Callable[[T], K]) -> "OrderedEnumerable[T]":
+        return OrderedEnumerable(self._source, self._key_selectors + [(key_selector, True)])
+
+
+class _DescendingWrapper:
+    def __init__(self, value):
+        self.value = value
+
+    def __lt__(self, other):
+        return self.value > other.value
+
+    def __gt__(self, other):
+        return self.value < other.value
+
+    def __eq__(self, other):
+        return self.value == other.value

src/cpl-query/cpl/query/set.py

@@ -1,39 +1,13 @@
-from typing import Generic, Iterable, Iterator, Optional
+from typing import Generic, Iterable, Optional
 
 from cpl.core.typing import T
+from cpl.query.immutable_set import ImmutableSet
 from cpl.query.enumerable import Enumerable
 
 
-class Set(Generic[T], Enumerable[T]):
+class Set(Generic[T], ImmutableSet[T]):
     def __init__(self, source: Optional[Iterable[T]] = None):
-        if source is None:
-            source = set()
-
-        self.__source = source
-        Enumerable.__init__(self, [])
-
-    @property
-    def _source(self) -> set[T]:
-        return self.__source
-
-    @_source.setter
-    def _source(self, value: set[T]) -> None:
-        if not isinstance(value, set):
-            value = set(value)
-
-        self.__source = value
-
-    def __iter__(self) -> Iterator[T]:
-        return iter(self._source)
-
-    def __len__(self) -> int:
-        return len(self._source)
-
-    def __contains__(self, item: T) -> bool:
-        return item in self._source
-
-    def __repr__(self) -> str:
-        return f"Set({self._source!r})"
+        ImmutableSet.__init__(self, source)
 
     @property
     def length(self) -> int:
@@ -50,4 +24,5 @@ class Set(Generic[T], Enumerable[T]):
 
     def to_enumerable(self) -> "Enumerable[T]":
         from cpl.query.enumerable import Enumerable
-        return Enumerable(self._source)
+
+        return Enumerable(self._source)