[Haskell-cafe] Re: Wikipedia on first-class object

[Cristian Baboi]

On Sun, 30 Dec 2007 19:02:11 +0200, Jonathan Cast  
<jonathanccast at fastmail.fm> wrote:

> On 30 Dec 2007, at 10:54 AM, Cristian Baboi wrote:
>
>> On Sun, 30 Dec 2007 18:39:51 +0200, Jonathan Cast  
>> <jonathanccast at fastmail.fm> wrote:
>>
>>> On 30 Dec 2007, at 10:14 AM, Cristian Baboi wrote:
>>>
>>>> On Sat, 29 Dec 2007 21:49:16 +0200, Jonathan Cast  
>>>> <jonathanccast at fastmail.fm> wrote:
>>>>
>>>>> On 29 Dec 2007, at 5:01 AM, Cristian Baboi wrote:
>>>>
>>>>>> By portable I mean: works on the same machine, with the same OS,  
>>>>>> but with different Haskell implementation.
>>>>>
>>>>> Ah, you can't.  But, again, what are you trying to do?  Re-compiling  
>>>>> your software for each implementation seems like a perfectly  
>>>>> reasonable thing to do, given the differences between them.
>>>>
>>>> Recompiling my software will not save a function created by the  
>>>> software at runtime.
>>
>>> Which is a different problem than the one solved by dynamic linking.   
>>> Again, why do you want to do this?
>>
>> I think they are not as different as you think they are.

> I think they're very different --- dynamic libraries can be built by  
> running the compiler, whatever you're asking for can't.

> More generally, dynamic libraries are supported by every production- 
> quality compiled language in existence; I know of no language that can  
> do what you're asking for.

> I think, again, that what you really want is a reason to discredit  
> Haskell.

A simple question:

Can you write the value of x to a file where x = (1:x) ?