[Haskell-cafe] Wikipedia on first-class object

Cristian Baboi cristi at ot.onrc.ro
Thu Dec 27 08:05:57 EST 2007

On Thu, 27 Dec 2007 14:37:51 +0200, Yitzchak Gale <gale at sefer.org> wrote:

> I wrote:
>>>>> Like any type, only certain operations make
>>>>> sense on functions...
>>>> Yes, but one can store the result of an operation to disk except in  
>>>> the
>>>> particular case the result happen to be a function.
>>> No, you can only store the result of an operation to
>>> disk in the particular case that the result type represents
>>> a list of bytes. Otherwise, you have to serialize it first...
>>> But it is not clear at all how you could define a general
>>> serialization method for functions.
>> Isn't that confusing levels of abstractions ?
>> Of course functions are bytes, 'cause they are already stored as bytes  
>> in
>> RAM.
> That is just the point. A function in Haskell is an abstraction,
> not bytes in RAM.
> The compiler might implement the same function in several places,
> with different bytes in each place. Or it might decide to combine it
> into other functions, and not store any bytes in RAM at all for this
> function.
> The function itself represents a way of doing a calculation. It is not an
> object that can do the calculation.

I think you try to say that the time cannot be stored.

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