1 files changed, 10 insertions, 0 deletions

diff --git a/Presence/ControlMaybe.hs b/Presence/ControlMaybe.hs
new file mode 100644
index 00000000..e277df12
--- /dev/null
+++ b/Presence/ControlMaybe.hs
@@ -0,0 +1,10 @@
+module ControlMaybe where
+
+withJust (Just x) f = f x
+withJust Nothing  f = return ()
+
+whenJust acn f = do
+    x <- acn
+    withJust x f
+
+