Re: for S'Image use Func??

["Yannick Duchêne (Hibou57)" <yannick_duchene@yahoo.fr>]

Le Fri, 07 May 2010 23:27:55 +0200, Randy Brukardt <randy@rrsoftware.com>  
a écrit:
>> Well, that "Put (Num_Errors);" is hiding something.  You have to
>> instantiate Text_IO.Integer_IO for all the integer types you
>> need to output.  That's annoying.
>
> It doesn't work very well, either, if you are outputting to a message  
> box or
> to a log manager: in both cases the entire message string has to be  
> passed
> at once. (That's the case in virtually all of my newer programs.) Not  
> many
> real programs do much output to Standard Output.
>
>                                 Randy.

Le Fri, 07 May 2010 23:36:04 +0200, Robert A Duff  
<bobduff@shell01.theworld.com> a écrit:

> "Randy Brukardt" <randy@rrsoftware.com> writes:
> Right, that's exactly what I meant when I said elsewhere in this
> thread that it's a good idea to separate formatting from output.
> Sometimes you want "format some stuff and dump it immediately
> to a file".  Other times you want "format some stuff" (and then
> sort the messages and grind upon them etc.) and then much later
> "send to log manager" or whatever.
>
> - Bob

There are alternatives, and here are two.

The first one : the log manager could have an open/close logic to output a  
log line.

    Open
    Write chunk
    Write next chunk
    ...
    Close

Another alternative I have used some months ago, was to use an abstraction  
of what a text is : I was passing procedure writing text instead of  
strings (to be exact, this was not access to procedures, this was tagged  
types with a single method). I though about it when I faced a brick-wall  
where I could not figure what could be the good minimum and maximum length  
for a particular string index type range. Then I though what was relevant,  
was not so much the strings, instead, this was what was written (that's  
not the same). So I decided to pass procedure writing strings instead of  
strings, so I could drop the trouble with strings allocation I was needed  
for formating purpose. There was no more strings, just writing of chunks  
of text each one after the other in turn.

I'm not to say this is an easy suitable for beginners (as we were also  
talking about ease of access for beginners), I'm just exposing this as  
example alternatives to the one-string-bulk way.

-- 
No-no, this isn't an oops ...or I hope (TM) - Don't blame me... I'm just  
not lucky