[fpc-pascal] Re: What is the most widely used Pascal on Linux and other Unix variants?

[Noa Shiruba]

Hi,


By the way, I was wrong about saying ABAP doesn't work outside of SAP BASIS in me previous example, I found their research project "caffeine" today and got it working.  Of course my next step will be to see how to make it interface with FPC. :)

Also, did anyone else notice that "tile" is now used by some standard units in FPC 2.6?

Thank you, 
     Noah silva



On 2012/02/29, at 19:31, Sven Barth <pascaldragon at googlemail.com> wrote:

> Am 28.02.2012 20:31, schrieb Lukasz Stafiniak:
>> On Tue, Feb 28, 2012 at 8:22 AM, Noah Silva
>> <shiruba at galapagossoftware.com>  wrote:
>>> 
>>> If you want to convince people to use FPC and are having issues, you should
>>> ask them what features, exactly, they are looking for.  Chances are that FPC
>>> has them.  (If they want a functional language, though, then you're out of
>>> luck).
>> 
>> Pascal is not entirely opposed to being a functional language. There
>> are two missing language features (consider it a proposal of
>> Functional Pascal):
>> 
>> (1) A declaration part, that parallels "var", with keyword "val" or
>> "let" (since "val" is taken up by a procedure). It introduces named
>> values, i.e. non-assignable variables. The part after "=" can be any
>> expression. Therefore, this feature spoils the "declaration --
>> implementation divide" that is dear to Pascal.
> 
> I personally don't see a use for this... but feel free to provide a useful example ;)
> 
>> (2) Closures. That is, making local functions that only use "const"
>> arguments and "val / let" variables safe to return from the outer
>> function. This can be done by allocating the "val / let" data on the
>> heap, or perhaps easier by copying them into an implicitly built
>> object and interpreting the returned local function as pointer to
>> method of this object. The closure-object would be memory-managed as
>> other objects.
> 
> Closures are already supported by Delphi 2009 and are currently being worked on by someone in FPC.
> 
> Regards,
> Sven
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