X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.scl.runtime%2Fscl%2FPrelude.scl;h=32582affa867947fbac5167b94c4d8919c0bd91c;hp=d5d2788285d45a30c815a303be8937dd5f60ad68;hb=e65cd7676f6e843e34a8501afc57f56cbc8602d3;hpb=3d043320cdee8dda92758f4ea1c324a82c7d9094

diff --git a/bundles/org.simantics.scl.runtime/scl/Prelude.scl b/bundles/org.simantics.scl.runtime/scl/Prelude.scl
index d5d278828..32582affa 100644
--- a/bundles/org.simantics.scl.runtime/scl/Prelude.scl
+++ b/bundles/org.simantics.scl.runtime/scl/Prelude.scl
@@ -1965,6 +1965,11 @@ importJava "org.simantics.scl.runtime.Lists" where
     """
     index :: [(a,b)] -> a -> Maybe b
     
+    """
+    Given a list of elements, the function produces its characteristic function.
+    """
+    indexSet :: [a] -> a -> Boolean
+    
     """
     Given a list of values and a function computing a key for each value, the function produces a function that finds a value
     effeciently for the given key.