From 2f8bfaea4e93a0056e9c43d18fec812ead8d6bcd Mon Sep 17 00:00:00 2001 From: Joey Hess <joey@kitenet.net> Date: Sun, 19 May 2013 18:20:48 -0400 Subject: [PATCH] blog for the day --- .../assistant/blog/day_268__core_monad_change.mdwn | 9 +++++++++ 1 file changed, 9 insertions(+) create mode 100644 doc/design/assistant/blog/day_268__core_monad_change.mdwn diff --git a/doc/design/assistant/blog/day_268__core_monad_change.mdwn b/doc/design/assistant/blog/day_268__core_monad_change.mdwn new file mode 100644 index 0000000000..2704bb090e --- /dev/null +++ b/doc/design/assistant/blog/day_268__core_monad_change.mdwn @@ -0,0 +1,9 @@ +Today I had to change the implementation of the Annex monad. The old one +turned out to be buggy around exception handling -- changes to state +recorded by code that ran in an exception handler were discarded when it +threw an exception. Changed from a StateT monad to a ReaderT with +a MVar. Really deep-level change, but it went off without a +hitch! + +Other than that it was a bug catch up day. Almost entirely caught up once +more.