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README
Todo
Todo wraps some standard debug symbols in warnings so that you'll have to work a bit harder to miss unfinished code in your Haskell programs.
Usage
Say that you have this line of code:
neatFunction = undefined
undefined is a good stubbing tool but what if you forget what you were stubbing? You'd like to have some more info on what you were doing, so you do this:
neatFunction = error "Got to implement this someday or my boss will get mad"
This may work but there's some issues with it:
erroris often used for non-total functions, this may confuse the reader- If we forget to implement the call for
neatFunction, we're not getting noticed that our function currently is incomplete!
Therefore, with Debug.Todo you can do this:
import Debug.Todo
neatFunction = todo "I'm going to implement this!"
This will not only solve the cultural ambiguity of error but
will also throw a compile time warning so if you're using
-Wall in your build step, you will get a warning whenever
you forget a todo in your code!
Example:
$ runhaskell example.hs
example.hs:5:16: warning: [-Wdeprecations]
In the use of ‘todo’ (imported from Debug.Todo):
"TODO:s exists in code! Make sure you fix them! "