Re: basic ada question

[Adrian Knoth <adi@thur.de>]

Randy <abuse@127.0.0.1> wrote:

> Ada.float_Text_IO.Get ( Item => P);
>
> I was wondering about the "Item=>."
> This is not (not yet anyway) explained and I was wondering if someone 
> could tell me more about why/how to use it?

It is a named parameter. You can use it to rearrange the order
of your parameters when calling a function/procedure.

Imagine something like this:

   procedure foo (param1: in t1; param2: in t2; param3: in t3)

So you can call foo with

   foo (a, b, c) where a has type t1, b has type t2 and c has type t3.

You might want to use a different order, so use named parameters:

   foo (param2 => b, param1 => a, param3 => c);

There is more to tell about named parameters, just go on reading
your book.

> 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 ;)

> Thanks

BTW: your postings sucks pretty much: no valid From, non-unique
     message-ID (no fqdn). Perhaps you can correct this.

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