Start working on parallelstream

Author: alemazzo

stream/parallelstream.py

@@ -0,0 +1,38 @@
+
+from stream import Stream
+from stream.iterators import IteratorUtils
+
+
+class ParallelUtils:
+
+    @staticmethod
+    def splitted(iterable, pre, offset):
+        for i in range(pre):
+            if next(iterable) is None:
+                return
+        while True:
+            elem = next(iterable)
+            if elem is None:
+                return
+            yield elem
+            for i in range(offset - 1):
+                if next(iterable) is None:
+                    return
+
+    @staticmethod
+    def split(iterable, count):
+        iters = []
+        for i in range(count):
+            iters.append(ParallelUtils.splitted(iterable, i, count))
+        return iters
+
+
+class ParallelStream(Stream):
+
+    PROCESS = 4
+
+    def __init__(self, iterable):
+        self.__iterables = ParallelUtils.split(iterable, self.PROCESS)
+
+    def get(self):
+        return self.__iterables[0]