Data.Tree.Extra: add setSubForest

1 files changed, 7 insertions, 0 deletions

diff --git a/src/Data/Tree/Extra.hs b/src/Data/Tree/Extra.hs
new file mode 100644
index 0000000..256af08
--- /dev/null
+++ b/src/Data/Tree/Extra.hs
@@ -0,0 +1,7 @@
+module Data.Tree.Extra where
+
+import Data.Tree (Forest, Tree(subForest))
+
+
+setSubForest :: Forest a -> Tree a -> Tree a
+setSubForest sf t = t { subForest = sf }