SV: Deep Copy prototype

["Andreas Stenius" <andreas.stenius@...>]

> >Thanks for the clarification. I meant to use:
> >
> >if T == "string" then return string.gsub( A, "(.*)", "%1")
>
> Which still does not do what you want. It is not possible to produce 2
> different copies of the same string in Lua.
>

I have some thoughts/wonderings regarding this..
What happens if we change the contents of the returned string, which
then would be a reference to original ( if I've not come to the wrong
conclusion ).

Ex ( not usefull as is, but to illustrate the idea ):
===8<---
do
	a = "test string"
	b = string.gsub( a, "(.*), "%1" )	-- if this is the whole string, why not
simply use "b = a" ?
	b = string.gsub( b, "t", "p" )	-- replace all t's with p's ( was my
intention any way )
	-- now I would expect b to be "pesp spring" and a to still be "test string"
end
--->8===

I'm tinking about what Nick Trout wrote:

NT>Both variables reference the same string object as long as the strings
NT>they are supposed to represent are the same value. If you assign a new
NT>value to a variable it will not change both values.

I should've run this simple test myself, but I haven't Lua installed here
atm..

Thank you,
Andreas