On Wednesday, 24 December 2014 at 07:44:21 UTC, Daniel Murphy
wrote:
Making value parameters immutable, and therefore making the
fact that they're not modified inside the function visible
externally, _IS_ "exposing irrelevant aspects of the
implementation in the interface". The caller doesn't care what
you do with them.
No. Make value parameters immutable, period. No mutable version
as an option. This does not expose anything to the caller.
If you want a mutable version in the implementation, do so in the
function body. If you only refer the mutable version in the
function body then the overhead will be optimized away by the
backend.
