diff options
Diffstat (limited to 'src/libutil/util.hh')
| -rw-r--r-- | src/libutil/util.hh | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/libutil/util.hh b/src/libutil/util.hh index edb7c0fa6c..dc38a53ca2 100644 --- a/src/libutil/util.hh +++ b/src/libutil/util.hh @@ -17,6 +17,9 @@ namespace nix { #define foreach(it_type, it, collection) \ for (it_type it = (collection).begin(); it != (collection).end(); ++it) +#define foreach_reverse(it_type, it, collection) \ + for (it_type it = (collection).rbegin(); it != (collection).rend(); ++it) + /* Return an environment variable. */ string getEnv(const string & key, const string & def = ""); |