Unused variables, better as error or warning?
newshound2 at digitalmars.com
Fri Aug 20 16:27:11 PDT 2010
> your language (C, D, etc) allows you to not use a variable the last time you
> have initialized it, and then you want to add a warning that finds such
> situations, you don't need the compiler to be 100% accurate, even if some of
> such situations are not detected then it's perfectly OK.
Then you're faced with one of two unpleasant consequences:
1. You have to build the logic of what cases you detect into the specification.
This leads to user confusion about the why's of this and gives a bad impression
about the arbitrary nature of it.
2. You are faced with errors building with one compiler and no errors on
another. I.e. your code loses portability.
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