alias = namespace [Re: alternative aliases [Re: [fpc-devel] Re: [fpc-pascal] Re: Ideas for namespace implementation]]

[Marcos Douglas]

On Mon, Jul 26, 2010 at 1:51 PM, Martin <fpc at mfriebe.de> wrote:
> On 26/07/2010 17:32, Marcos Douglas wrote:
>>
>>>> using IN and ALIAS,
>>>> - the developper should still attempt to use names that he hopes to be
>>>> unique: MyFooStrUtils,instead of StrUtils
>>>> - only in the rare case of a conflict, action is needed
>>>>
>>>
>>> Well... now that I know how you want those "in 'LCL'" things to work I
>>> tend
>>> to prefer your solution... (I'm easy to convince, I know ^^).
>>>
>>> Also it's backwards compatible if it is not used. Nice :D
>>>
>>
>> This is cool, but duplicate names may still exist.
>>
>
> True, but they always do:
>
> - Currently you get duplicate unit names
> - With namespaces you get duplicate namespace-names
> - with search-path aliases, you get duplicate aliases
>
> You can change the search-path alias of any package that yyou use, in the
> packages settings => that is quick and easy.
>
> Of course that could leave you with 100 of units in your project, that point
> to the old alias....
> Actually NO it could not.
> You get the conflict, if you add a new package => so then you change the
> alias off the package that is new, and not yet referenced.
>
> of course if you add 2 packages, which both rely on the alias FOO, but
> expect something differnet under foo,  ==> but then, you can specify
> different search-path aliases, for compiling each packages => solved again
>
>
> And last not least, to reduce the amount of references to the search path
> aliases => you could use the program file to define glabal unit aliases
>
> programm xxx;
> uses FOO in 'LCL' alias 'LCLFOO',  unit1;
>
> ---
> unit unit1;
> uses LCLFOO; the alias from your program
>
> ---
>
> maybe a similar "global" file could be used to define a package, and define
> global aliases for a package.
>  Package SynEdit;
>  uses....
>
> and to compila all units of the package, you compile th package file (same
> as the programm for your app)

I agree, as I said here:
http://lists.freepascal.org/lists/fpc-devel/2010-July/021106.html

MD