Re: Transparent shallow copy of tables

[Benjamin Tolputt <btolputt@...>]

Stuart P.Bentley wrote:
> How can I do a shallow copy of a table that operates identically to
> the original? Currently I'm setting tables to be empty tables with
> metatables that save deletions and create similar shallow copies on
> index access, but this is causing problems with functions like
> table.concat().
>
> I'd prefer to avoid a deep copy if possible, since that would take a
> long time regardless of access depth.

This sounds like an idea I had for the capability to commit or roll-back
changes to process state as a form of transactional memory. The issue is
that this would need to be applied to all tables Lua constructed, which
would necessarily slow down the system (too much?).

What is the use case for this?

-- 
Regards,

Benjamin Tolputt
Analyst Programmer