ltrace, labelled trace

2009-03-15 03:58:43 +00:00 · 2009-03-15 03:58:43 +00:00 · 0693723aee
commit 0693723aee
parent 931144a12d
1 changed files with 4 additions and 0 deletions
--- a/Ledger/Utils.hs
+++ b/Ledger/Utils.hs
@ -215,6 +215,10 @@ showforest = concatMap showtree
 strace :: Show a => a -> a
 strace a = trace (show a) a

+-- | labelled trace - like strace, with a newline and a label prepended
+ltrace :: Show a => String -> a -> a
+ltrace l a = trace ("\n" ++ l ++ ": " ++ show a) a
+
 -- testing

 assertequal e a = assertEqual "" e a