Weak Purity Blog Post

[Joakim via Digitalmars-d-announce]

On Monday, 28 March 2016 at 01:44:02 UTC, sarn wrote:
> D's implementation of functional purity supports "weak" purity 
> - functions that can mutate arguments but are otherwise 
> traditionally pure.
>
> I wrote a post about some of the practical benefits of this 
> kind of purity:
>
> https://theartofmachinery.com/2016/03/28/dirtying_pure_functions_can_be_useful.html

Very well-written, someone post it on Reddit.