Here's a little trick that I often use for inclusion and exclusion of
a chunk of code.
Imagine we have a function foo defined below.
The three lines of code can be included
or excluded just by a changing a single character --- that's the trick.
So, the idea is to comment our code in a slightly different way like
this to exclude the code from executing:
1 {-
2 myand :: Bool -> Bool -> Bool
3 myand a b = if a == b then True
4 else False
5 --}
Notice how line 5 is commented '--}' instead of '-}'. Now, if we change
the first character in line 11 from '{' to '-' the entire chunk of code
from line 12-14 no longer remains comment.
11 --
12 myand :: Bool -> Bool -> Bool
13 myand a b = if a == b then True
14 else False
15 --}
This trick can also be applied to C++ comments.
Best wishes,
Sunil
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