1 files changed, 12 insertions, 0 deletions

diff --git a/crates/stdx/src/lib.rs b/crates/stdx/src/lib.rs
index e3eb10915..857567a85 100644
--- a/crates/stdx/src/lib.rs
+++ b/crates/stdx/src/lib.rs
@@ -179,6 +179,18 @@ where
     start..start + len
 }
 
+pub fn defer<F: FnOnce()>(f: F) -> impl Drop {
+    struct D<F: FnOnce()>(Option<F>);
+    impl<F: FnOnce()> Drop for D<F> {
+        fn drop(&mut self) {
+            if let Some(f) = self.0.take() {
+                f()
+            }
+        }
+    }
+    D(Some(f))
+}
+
 #[repr(transparent)]
 pub struct JodChild(pub std::process::Child);