I wrote a short programm which detect and list unused variables.
I'm sure it isn't perfect but it passed most of my test cases, but I think at the moment it isn't good enough to present it in announce. Maybe some of you have interest to help me. IMO something like this should be integrated into the D compiler.

Comments, suggestions and critism are desirable.

Code: http://dpaste.dzfl.pl/c5f1d2ba
Some of my testcases: http://dpaste.dzfl.pl/f74da85e

Namespace:
> I wrote a short programm which detect and list unused variables.

I suggest to attach both code and testcases to:
http://d.puremagic.com/issues/show_bug.cgi?id=3960

Even if your code will never be used, it shows Walter&Andrei that there is interest in having this warning, and test cases are useful for other implementations too.

Bye,
bearophile

On 7/30/12, Namespace <rswhite4@googlemail.com> wrote:
> IMO something like this should be integrated into the D compiler.

As long as it's togglable via a compiler switch. :)

On Monday, 30 July 2012 at 16:47:32 UTC, bearophile wrote:
> Namespace:
>> I wrote a short programm which detect and list unused variables.
>
> I suggest to attach both code and testcases to:
> http://d.puremagic.com/issues/show_bug.cgi?id=3960
>
> Even if your code will never be used, it shows Walter&Andrei that there is interest in having this warning, and test cases are useful for other implementations too.
>
> Bye,
> bearophile

I think my english isn't good enough to make a persuasive comment there, but i will try it this evening. I will simply copy my post above.

Andrej Mitrovic:
Maybe automatically if you use -w or -wi.

Namespace:

> I think my english isn't good enough to make a persuasive comment there, but i will try it this evening. I will simply copy my post above.

Your English skills seems enough, but in the end what's important is to show that some people care to have for this warning.
Walter is usually right, but once in a while he's wrong, and some stubbornness is needed to show it :)

Bye,
bearophile

> I suggest to attach both code and testcases to:
> http://d.puremagic.com/issues/show_bug.cgi?id=3960

Done.

Namespace:

>> I suggest to attach both code and testcases to:
>> http://d.puremagic.com/issues/show_bug.cgi?id=3960
>
> Done.

I see no attachments :-( Only ephemeral links.

Bye,
bearophile

On Monday, July 30, 2012 18:50:08 Andrej Mitrovic wrote:
> On 7/30/12, Namespace <rswhite4@googlemail.com> wrote:
> > IMO something like this should be integrated into the D compiler.
> 
> As long as it's togglable via a compiler switch. :)

Walter doesn't like compiler switches like that, and he doesn't like it when the compiler complains about unused variables. So, I wouldn't expect it to happen, but anyone's free to create a pull request and try.

- Jonathan M Davis

On 7/30/12, Jonathan M Davis <jmdavisProg@gmx.com> wrote:
> Walter doesn't like compiler switches like that

Walter is a big fat phony, count the number of switches here: http://www.digitalmars.com/ctg/sc.html#switches

:D

On Monday, July 30, 2012 20:08:12 Andrej Mitrovic wrote:
> On 7/30/12, Jonathan M Davis <jmdavisProg@gmx.com> wrote:
> > Walter doesn't like compiler switches like that
> 
> Walter is a big fat phony, count the number of switches here: http://www.digitalmars.com/ctg/sc.html#switches

That may be part of _why_ he doesn't like switches for enabling and disabling warnings and the like - that and as many switches are there, I'm not sure that any actually enable or disable specific warnings - which I believe is primarily what he's against.

- Jonathan M Davis