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- Subject: Re: Question about Lua history
- From: Roberto Ierusalimschy <roberto@...>
- Date: Mon, 25 Feb 2008 09:46:03 -0300
> This is a simple question I ask myself every time I see some Lua 4 code: why
> did it require a prefix '%' for upvalues? Was it an implementation
> constraint? A way to mark stuff that were compiled very inefficiently?
It was a way to mark that it was not accessing the real variable, but a
value frozen when the closure was created.
-- Roberto
