Prevent NPE if the path to the module source cannot be found

[simantics/platform.git] / bundles / org.simantics.scl.runtime / scl / Prelude.scl

diff --git a/bundles/org.simantics.scl.runtime/scl/Prelude.scl b/bundles/org.simantics.scl.runtime/scl/Prelude.scl
index 4a51875b2be4595c056e725f734aaee8cd26cfab..751294a11bb44ea03df62391d7120c83bf9a1a0c 100644 (file)
--- a/bundles/org.simantics.scl.runtime/scl/Prelude.scl
+++ b/bundles/org.simantics.scl.runtime/scl/Prelude.scl
@@ -1999,7 +1999,7 @@ importJava "org.simantics.scl.runtime.Lists" where
     unique :: [a] -> [a]
     
     "Like `unique`, but uses the given function for finding the key values used for uniqueness testing."
     unique :: [a] -> [a]
     
     "Like `unique`, but uses the given function for finding the key values used for uniqueness testing."

-    uniqueBy :: (a -> b) -> [a] -> [a]
+    uniqueBy :: (a -> <e> b) -> [a] -> <e> [a]

 
     "Works like `unique` but uses the given function for equality tests."
     uniqueWith :: (a -> a -> Boolean) -> [a] -> [a]
 
     "Works like `unique` but uses the given function for equality tests."
     uniqueWith :: (a -> a -> Boolean) -> [a] -> [a]