regading detection of stdin

[Chris Cain]

On Friday, 6 December 2013 at 00:24:22 UTC, Hugo Florentino wrote:
> Hi,
>
> I was trying to do something like this (using dmd.2.064.2 both 
> from Windows and Linux), but if nothing is passed from stdin 
> and no parameter is provided, the application freezes:
>
> ...snip...
>
>
> Where is the problem?
>
> Regards, Hugo

I'm not sure I understand the problem. Your program works as I 
think you describe it should on my Linux box:

---
zshazz at manjarox ~/projects/explore % cat /dev/null | rdmd 
inputStuff.d
No argument passed as parameter or from stdin.
zshazz at manjarox ~/projects/explore % echo -n "" | rdmd 
inputStuff.d
No argument passed as parameter or from stdin.
zshazz at manjarox ~/projects/explore % echo -n "test" | rdmd 
inputStuff.d
Argument passed from stdin succesfully stored in variable s.
zshazz at manjarox ~/projects/explore % rdmd inputStuff.d blah.txt
Argument passed as parameter succesfully stored in variable s.
---

If you just run it (via `rdmd inputStuff.d`) it pauses and waits 
for some sort of input, but that's expected. Using `ctrl-d` 
results in "No argument passed as parameter or from stdin." as 
expected in that case.

Could you describe what you're doing exactly that causes it to 
freeze?