1 files changed, 77 insertions, 0 deletions
diff --git a/src/iter/for_each.rs b/src/iter/for_each.rs
new file mode 100644
index 0000000..3b77beb
--- /dev/null
+++ b/src/iter/for_each.rs
@@ -0,0 +1,77 @@
+use super::noop::*;
+use super::plumbing::*;
+use super::ParallelIterator;
+
+pub(super) fn for_each<I, F, T>(pi: I, op: &F)
+where
+    I: ParallelIterator<Item = T>,
+    F: Fn(T) + Sync,
+    T: Send,
+{
+    let consumer = ForEachConsumer { op };
+    pi.drive_unindexed(consumer)
+}
+
+struct ForEachConsumer<'f, F> {
+    op: &'f F,
+}
+
+impl<'f, F, T> Consumer<T> for ForEachConsumer<'f, F>
+where
+    F: Fn(T) + Sync,
+{
+    type Folder = ForEachConsumer<'f, F>;
+    type Reducer = NoopReducer;
+    type Result = ();
+
+    fn split_at(self, _index: usize) -> (Self, Self, NoopReducer) {
+        (self.split_off_left(), self, NoopReducer)
+    }
+
+    fn into_folder(self) -> Self {
+        self
+    }
+
+    fn full(&self) -> bool {
+        false
+    }
+}
+
+impl<'f, F, T> Folder<T> for ForEachConsumer<'f, F>
+where
+    F: Fn(T) + Sync,
+{
+    type Result = ();
+
+    fn consume(self, item: T) -> Self {
+        (self.op)(item);
+        self
+    }
+
+    fn consume_iter<I>(self, iter: I) -> Self
+    where
+        I: IntoIterator<Item = T>,
+    {
+        iter.into_iter().for_each(self.op);
+        self
+    }
+
+    fn complete(self) {}
+
+    fn full(&self) -> bool {
+        false
+    }
+}
+
+impl<'f, F, T> UnindexedConsumer<T> for ForEachConsumer<'f, F>
+where
+    F: Fn(T) + Sync,
+{
+    fn split_off_left(&self) -> Self {
+        ForEachConsumer { op: self.op }
+    }
+
+    fn to_reducer(&self) -> NoopReducer {
+        NoopReducer
+    }
+}