Why can't function expecting immutable arg take mutable input?

[Ali Çehreli via Digitalmars-d-learn]

On 10/16/2015 03:35 AM, Shriramana Sharma wrote:
> Hello. I still haven't wrapped my mind around the const/immutable thing yet
> and am still stuck in C/C++ mode. :-(

Welcome to the club! :) You can read my understanding of the issue at 
the following link:

 
http://ddili.org/ders/d.en/const_and_immutable.html#ix_const_and_immutable.parameter,%20const%20vs.%20immutable

Ali