Made the error management for loading the JSON config file work as one might
expect it should. Expanded the error reporting expectations to include specific
file reading and JSON decoding errors.
The difficulties that will be had in handling the multiple either values will
motivate latter sections RE ExceptT (EitherT) transformers. However there is
nothing here that should be beyond people that do not know how transformers
work.
Added more doctests to the different moving parts to make things a bit clearer.
Added doctests to the cabal files and included a 'doctests.hs' to the tests
section.
default.nix files have been updated with the bonus dependency.
There is no persistent storage in the application by the time we're expecting
students to write ``Response`` handling functions. So add some more guidance
that we only expect placeholder values to be used, this wasn't sufficiently
clear. Fixes#3
Updated the latter placeholder values to match the guidance offered, for
consistency.
Updated the configuration ``helloMsg`` value and some of the tests to be a bit
more sensible, even if only a little.
Reworded ``Error`` blurb to direct people to try to write other functions and
see what errors are needed. Fixes#1
Changed the ``Port`` type to ``Word16`` to be more precise about what values we
allow for a port number. Add a helper function to take a ``Conf`` to the ``Int``
value that Wai requires. Fixes#4
Added readme files to the individual exercises to help point people in the right
direction when they get started. Probably more useful to the people that are
wanting to try this by themselves.
Removed more commented out code, removed some of the hand holding I had
and added some more indication of when you should probably just reach
for the docs
Added level05: installing a DB layer.
Updated the cabal files with a nice ghc-option of '-Wall -Werror'.
Added some more comments to the level04 testing page.
Will replace with SQLite because Postgres could be a giant pain.
Finish restructuring the cabal files/projects correctly to set a
better example for people.
