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Re: One more question about elisp


From: Xah Lee
Subject: Re: One more question about elisp
Date: Fri, 6 Nov 2009 12:02:23 -0800 (PST)
User-agent: G2/1.0

On Nov 6, 8:46 am, Francis Moreau <address@hidden> wrote:
> Hello,
>
> I'm now wondering what is the elisp way to create structured objects
> and how to access them later.
>
> For example I want to create a structure/object which store
> information about a person.
>
> In C language, I would do something like this:
>
> structure person {
>     int age;
>     char *name;
>
> };
>
> For an object oriented language, Python for example, I would do:
>
> class Person(object):
>     def __init__(self, age, name):
>         self.age = age
>         self.name = name
>
> but how I do that in elisp ?
>
> Should I use a list ? That wouldn't be convenient for accessing the
> 'fields' of the object later since I need to use an index rather than
> a name field.
>
> Could anybody provide a pointer or any hints ?

you can use  Association Lists or hash table. For a short tutorial,
see:

• Elisp Lesson: Hash Table
  http://xahlee.org/emacs/elisp_hash_table.html

  Xah
∑ http://xahlee.org/

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