1 files changed, 40 insertions, 0 deletions
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..8c2fe74
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,40 @@
+//! This crate adds the missing Option::inspect function via an extension trait
+//!
+
+pub trait OptionInspect<F, T>
+    where F: FnOnce(&T),
+          T: Sized
+{
+    fn inspect(self, f: F) -> Self;
+}
+
+pub trait OptionInspectRef<F, T>
+    where F: FnOnce(&T),
+          T: Sized
+{
+    fn inspect(&self, f: F);
+}
+
+impl<F, T> OptionInspect<F, T> for Option<T>
+    where F: FnOnce(&T),
+          T: Sized
+{
+    fn inspect(self, f: F) -> Self {
+        if let Some(ref o) = self.as_ref() {
+            (f)(&o);
+        }
+
+        self
+    }
+}
+
+impl<F, T> OptionInspectRef<F, T> for Option<T>
+    where F: FnOnce(&T),
+          T: Sized
+{
+    fn inspect(&self, f: F) {
+        if let Some(ref o) = self {
+            (f)(&o);
+        }
+    }
+}