On Aug 21, 10 03:35, Walter Bright wrote:
Jonathan M Davis wrote:
I'm sure that there are cases where it would be nice for the compiler
to point out that you're uselessly assigning to a variable (especially
if you're making a useless function call too), but it would cost the
compiler too much in complexity and cost the programmer in many other
cases by forcing them to either ignore warnings (which they should
pretty much never do) or throw in pointless explicit initializations
rather than letting the defaults do their job.
Having such be errors (or warnings) makes for a very annoying
experience. For example, when you're commenting out code trying to find
a problem, or when you're generating D source code from some DSL, etc.,
having unused variables or assignments happen often.
That's why other compilers support fine-grained warning control! :)
