[FRIAM] What is an object?
Alfredo Covaleda Vélez
alfredo at covaleda.co
Wed Jul 18 00:34:51 EDT 2018
And this is probably even better for your discussion
http://wiki.c2.com/?AlanKaysDefinitionOfObjectOriented
On Tue, Jul 17, 2018 at 11:09 PM, Alfredo Covaleda Vélez <
alfredo at covaleda.co> wrote:
> I do not know if Alan Kay created the term object in the context of
> programming but he was a pioneer of OOP when created Smalltalk. These are
> few paragraphs where Kay is cited in relation to the term object and
> concept is explained.
>
> https://www.yegor256.com/2017/12/12/alan-kay-was-wrong.html
>
> Felicidades para todos.
>
> On Tue, Jul 17, 2018 at 10:19 PM, Marcus Daniels <marcus at snoutfarm.com>
> wrote:
>
>> One can also have procedures bound to types where the procedures are
>> pure.
>> OOP does not imply methods that have privileged access to state, although
>> this is common with languages like C++ and Java.
>> In contrast, a method (or type bound procedure) can have privileged
>> access to the meaning of state when state is provided (as an argument).
>> Haskell basically requires this approach and Fortran 2008 facilitates it.
>>
>> On 7/17/18, 9:05 PM, "Friam on behalf of Russell Standish" <
>> friam-bounces at redfish.com on behalf of lists at hpcoders.com.au> wrote:
>>
>> Not sure about "utility"/"tool", but an object is distinguished from a
>> function by having state. Call an object's method, and the method's
>> scope is populated by the object's data members, which of course,
>> differ from object to object.
>>
>> By contrast a function either has no state (pure function), or its
>> state is global (same for every function invocation).
>>
>> Cheers
>>
>> On Tue, Jul 17, 2018 at 10:06:57PM -0400, Nick Thompson wrote:
>> > Dave, and anybody else who wants to play.
>> >
>> >
>> >
>> > I have always been puzzled by the question of how one distinguishes
>> an
>> > object in object programming from a utility in DOS or a tool in
>> Matlab. Or
>> > any mathematical function, for that matter. You give it what it
>> needs, and
>> > it gives you what it's supposed to, and you don't give a damn how
>> it works.
>> >
>> >
>> >
>> > Please don't yell at me.
>> >
>> >
>> >
>> > Nick
>> >
>> >
>> >
>> > Nicholas S. Thompson
>> >
>> > Emeritus Professor of Psychology and Biology
>> >
>> > Clark University
>> >
>> > http://home.earthlink.net/~nickthompson/naturaldesigns/
>> >
>> >
>> >
>>
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>>
>>
>> --
>>
>> ------------------------------------------------------------
>> ----------------
>> Dr Russell Standish Phone 0425 253119 (mobile)
>> Principal, High Performance Coders
>> Visiting Senior Research Fellow hpcoder at hpcoders.com.au
>> Economics, Kingston University http://www.hpcoders.com.au
>> ------------------------------------------------------------
>> ----------------
>>
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>>
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>> FRIAM Applied Complexity Group listserv
>> Meets Fridays 9a-11:30 at cafe at St. John's College
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>
>
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