[Oberon] Calling a command from within a normal procedure

[Srinivas Nayak]

Many thanks Chris.
Now I understood.

Then I hope, I can use String.Ln as a command.
Can we?


With thanks and best regards,

Yours sincerely,
Srinivas Nayak

Home: http://www.mathmeth.com/sn/
Blog: http://srinivas-nayak.blogspot.in/

On 03/07/2016 05:55 PM, Chris Burrows wrote:
>> -----Original Message-----
>> From: Oberon [mailto:oberon-bounces at lists.inf.ethz.ch] On Behalf Of
>> Srinivas Nayak
>> Sent: Monday, 7 March 2016 10:29 PM
>> To: ETH Oberon and related systems
>> Subject: Re: [Oberon] Calling a command from within a normal
>> procedure
>>
>> I mean calling Edit.Open as we call String.Ln in a procedure.
>> To my knowledge, an exported parameter-less procedure can be a
>> command.
>> Then what is the difference between Edit.Open and String.Ln?
>>
>
> (I attempted to send this clarification to my previous reply, earlier -
> apologies if I'm repeating myself)
>
> No difference in the way they are called. However, some commands expect
> interactive input (e.g. via a Texts.Scanner). Here's a simple test program
> that illustrates calling a parameterless exported procedure (Edit.Open) from
> another procedure:
>
> MODULE Command;
>
> IMPORT Edit;
>
> PROCEDURE Run*;
> BEGIN
>    Edit.Open
> END Run;
>
> END Command.
>
> Regards,
> Chris
>
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