Re: Clause "with and use"

[Gautier Write-only <gautier@fakeaddress.nil>]

Pascal Obry:

> I really don't like this idea. This will just help writing bad Ada programs. I
> think that a use clause must be avoided if possible and if not the use
> clause should be put the more local possible (inside the routines that really
> use feature from the package).

If you wanted to discourage writing bad programs in that optic, you should
suppress the use_clause as a context_clause (for the non-Manual maniaks,
these are clauses before "procedure" or "package").
The with_and_use_clause won't add any facility, but will reduce typing.

As you say, the usage of "use" must be as local as possible, if even needed.
Sometimes (and it may concern lots of packages in some situations) the
most reasonabily local place for "use" is in a context clause...

> This helps understanding the program
> better. Having hundreds of with/use at the start of a program is the better
> way to get lost !

This is exactly that problem "with and use" will help solving.
If you move one context "use" to ten local places just to lighten
the start of your program, you won't necessarily improve the
the overall readability, but add noise a bit further in the program...

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Gautier  --  http://www.mysunrise.ch/users/gdm/gsoft.htm

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