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Re: sqlite3

From: Qiantan Hong
Subject: Re: sqlite3
Date: Sun, 12 Dec 2021 04:18:08 +0000

> Would you like to show me the sqlite3 interface?  We may as well
> see if we can use that one.
I believe the sqlite3 interface accepts strings of SQL code, which
makes it unlikely to be used as an interface for general Lisp programs.

> I think we should define a program interface for "save this data
> persistently", hook it up to _both_ formats (textual Lisp and
> sqlite3), then design each piece of code that saves persistent data
> to use whichever representation is selected at the time.
> Eventually we might convert all the existing places that make
> persistent data so that they use this interface and can save the data
> either way.
I’m currently working on this, some discussions happen in thread
[New package: resist!], some off list. Currently my proposal is basically
to provide two packages:
- store.el, which provides a persistent key-value store interface,
   and supports multiple backends.
   the interface:
   store-make, store-get, store-put, store-rem,
   store-push, store-delete
- persist.el (still waiting for response from the author of a package
  of the same name to see if we can use this namespace),
  which provides persistent variables that are saved periodically.
   the interface:
   (persist-make-variable VARIABLE &optional STORE METHOD), 
   (persist-kill-variable VARIABLE)

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