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authormakefu <github@syntax-fehler.de>2015-07-29 14:56:06 +0200
committermakefu <github@syntax-fehler.de>2015-07-29 14:56:06 +0200
commit0bf2b871dda30231443324588ab8142e125e9774 (patch)
tree0646d45eab135eb2c7d8665c31d7ac135e29afff /krebs/4lib/tree.nix
parent671710c573980d859cb82993cd0514058a63262f (diff)
parent1bf670270c1e87900a908f7e9b949b5502158f4f (diff)
merge cloudkrebs, fix path to krebs/4lib
Diffstat (limited to 'krebs/4lib/tree.nix')
-rw-r--r--krebs/4lib/tree.nix13
1 files changed, 13 insertions, 0 deletions
diff --git a/krebs/4lib/tree.nix b/krebs/4lib/tree.nix
new file mode 100644
index 000000000..1cd83b3f6
--- /dev/null
+++ b/krebs/4lib/tree.nix
@@ -0,0 +1,13 @@
+{ lib, ... }:
+
+with lib;
+
+rec {
+ # tree k v = set k (either v (tree k v))
+
+ # get : [k] -> tree k v -> v
+ get = path: tree:
+ if length path > 0
+ then get (tail path) tree.${head path} # TODO check if elem exists
+ else tree;
+}