Added query@v2

example/custom/query/main.py

@@ -0,0 +1,49 @@
+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.set import Set
+
+
+def _default():
+    Console.write_line(Enumerable.empty().to_list())
+
+    Console.write_line(Enumerable.range(0, 100).length)
+    Console.write_line(Enumerable.range(0, 100).to_list())
+
+    Console.write_line(Enumerable.range(0, 100).where(lambda x: x % 2 == 0).length)
+    Console.write_line(
+        Enumerable.range(0, 100).where(lambda x: x % 2 == 0).to_list().select(lambda x: str(x)).to_list()
+    )
+    Console.write_line(List)
+
+    s =Enumerable.range(0, 10).to_set()
+    Console.write_line(s)
+    s.add(1)
+    Console.write_line(s)
+
+
+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()
+    )
+    Benchmark.all("List comprehension", lambda: [x * 2 for x in data if x % 2 == 0])
+
+
+def main():
+    N = 10_000_000
+    data = list(range(N))
+    t_benchmark(data)
+
+    Console.write_line()
+    _default()
+
+
+if __name__ == "__main__":
+    main()