Why I'm Excited about D

[Adam D. Ruppe via Digitalmars-d]

On Wednesday, 8 April 2015 at 17:41:01 UTC, ixid wrote:
> It would be useful for debugging pipelines to be able to drop 
> in writeln in the middle of the pipeline and pass on the data 
> unchanged.

That might be useful for debugging but I'd also be annoyed if 
someone used that in production code too because then your 
pipeline would have global side effects!