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- Subject: Lua locals
- From: rw20@...
- Date: Fri, 14 Nov 1997 08:51:31 -0500 (EST)
Hello, again. Did anyone get my last message about locals? Sorry to
repost if it was just too uninteresting to respond to.
I'm wondering why Lua defaults to global for variable access in
functions. Most of the time local default is what I need and polluting
the global space unintentionally can lead to some difficult bugs. I know
one can just stick a 'local' in front of everything, but one can also
program without functons using a goto.
I have two suggestions:
1. could some form of fallback govern local vs. global defaults? this
probably isn't the best way.
2. how about a new function declaration keyword, say 'method', which
defaults to local access and a new keyword 'global' that gives you access
to globals from within functions:
print(x) -- error
x='a string' -- global x=10 still
print(x) -- prints 'a string'
print(global x) -- prints 10