X-Git-Url: https://mattmccutchen.net/match/match.git/blobdiff_plain/967c39efa10c8a2d74812741cd7a2a96602a6210..35ce78e3b164a71da6177f0577b598a12198d237:/program/ArrayStuff.hs

diff --git a/program/ArrayStuff.hs b/program/ArrayStuff.hs
index abf14c7..ceb7516 100644
--- a/program/ArrayStuff.hs
+++ b/program/ArrayStuff.hs
@@ -4,6 +4,8 @@ import Data.Array.IArray
 
 funcArray lohi f = listArray lohi $ map f $ range lohi
 
+constArray lohi v = listArray lohi $ repeat v
+
 transposeArray arr =
 	let swap (x, y) = (y, x) in
 	let (lo, hi) = bounds arr in
@@ -16,3 +18,6 @@ array2DtoListOfLists arr =
 -- Use instead of amap when the array implementation needs to change.
 -- E.g., mapping an unboxed array to an array whose elements must be boxed.
 amap2 f arr = funcArray (bounds arr) (\i -> f (arr ! i))
+
+-- Like amap2 but the mapping function is also passed the index.
+aixmap f arr = funcArray (bounds arr) (\i -> f i (arr ! i))