const(X) member of Y

[Maxim Fomin]

On Wednesday, 6 February 2013 at 21:28:33 UTC, Era Scarecrow 
wrote:
>
>  I considered that perhaps the writing was wrong and it would 
> be 'this(const this)', however since this is a variable it's 
> referring to the hidden first field who's type is automatically 
> deduced. This means it can't be that way otherwise all the data 
> is const and thereby the definition is disallowed (pointless), 
> unless you'd wanted to only change something from the original 
> array... which seems off.
>

but this(const this) is supported and means to be a constructor