On Wednesday, 14 March 2018 at 22:23:47 UTC, Cecil Ward wrote:
say in C I have a function with a pointer argument foo( const sometype_t * p )[...]
That's the secret - I didn't know about the const (T) * thing - I would never have discovered that ! Many thanks, the missing piece to the puzzle.
Many generous replies, thanks to all for their extremely helpful contributions. There is a wealth of precious explanation in them, and apologies for not thanking the contributors individually.
