(refs #7489) Added replicate function to Prelude

[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 f0eca0eb26dc78141f4a4f204f9f46ce14948c2c..83d84ccf2da505c6590b404c23c93a484fb98ad2 100644 (file)
--- a/bundles/org.simantics.scl.runtime/scl/Prelude.scl
+++ b/bundles/org.simantics.scl.runtime/scl/Prelude.scl
@@ -1065,6 +1065,15 @@ mapEither f list = runProc do
         Right v -> addArrayList r v)
     (Java.unsafeCoerce l, Java.unsafeCoerce r)
 
+"`replicate n v` returns a list of length `n` such that each element is a copy of `v`."
+@inline
+replicate :: Integer -> a -> [a]
+replicate n v = build (\empty cons ->
+    let aux 0 l = l
+        aux i l = aux (i-1) (cons l v)
+    in aux n empty 
+    )
+
 /// FunctorM ///
 
 class (Functor f) => FunctorM f where