Re: basic ada question

[Simon Wright <simon@pushface.org>]

Adrian Knoth <adi@thur.de> writes:

>> It seems to be optional and not required.
>
> You're not forced to use named parameters. It's just a feature to
> ease your life ;)

And it can really make it easier to understand a call and be sure you
have the parameters right;

      System.Pool_Size.Deallocate
        (Pool => System.Pool_Size.Stack_Bounded_Pool (Pool),
         Address => Address,
         Storage_Size => Storage_Size,
         Alignment => Alignment);

might look like overkill, but you can be sure it's what was meant.

I sometimes find myself using a mixed style,

               Invalidate (Current_Item (Using),
                           If_For_Instance =>
                             Instance_Base_P (For_The_Instance));

which is more of an annotation. Of course you need to name the
parameters so that they make sense when used like this (in particluar,
name them from the point of view of the caller).