Re: Psuedo-proposal: const expression
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- Subject: Re: Psuedo-proposal: const expression
- From: Jay Carlson <nop@...>
- Date: 2012年3月10日 00:14:26 +0000
On Fri, Mar 9, 2012 at 11:16 AM, Robert Virding
<robert.virding@erlang-solutions.com> wrote:
> Immutable data will/should also change the meaning of equality. If I have
>
> x1 = const {'a','b'}
> x2 = const {'a','b'}
>
> should x1 == x2?
More pointedly, should
t = {}
t[x1] = true
assert( t[x2] )
succeed?
This is the question of value semantics. So, how *do* you pass tables
by value in Lua? :-)
Jay