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Date: Mon, 28 Aug 2023 02:18:37 -0700 (PDT)
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Subject: Re: Parameterised 'Image Attributes
From: Stephen Davies <joviangm@gmail.com>
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On Friday, 25 August 2023 at 14:02:57 UTC+1, Dmitry A. Kazakov wrote:
> On 2023-08-25 11:04, Stephen Davies wrote: 
> The proposal was to add parameters defaulted to the existing behavior. 
> Year'Image (Plus=>None,Width=>4,Alignment=>Right,Padding=>'0')
>
> > So the programmer could use 'User_Image to generate a display string 
> > that will be formatted to the users preferences without knowing 
> > (or being able to make assumptions about) those preferences, 
> > e.g. Put_Line ("The result is " & Result'User_Image)
> This will be rejected on the same grounds as the original proposal.
> Read Randy's response.
I did read Randy's response, he explained the difficulty in adding
parameters to 'Image, so I suggested an alternative parameter-less
attribute. You could allow the output of this attribute to be
configurable by either some package data (c.f. Text_IO.Default_Width)
and/or by the OS. To be honest, all I really want is an attribute that
any Ada program can use to get a string suitable for output to its
users, i.e no leading space and exponentiation only used when needed.