What's wrong here?
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- Subject: What's wrong here?
- From: Thomas Lauer <thomas.lauer@...>
- Date: 2007年3月21日 09:50:47 +0000
Either I am doing something so stupid that I can't see it or something
fishy is going on. Consider this:
function x(l)
z=0
l=nil
return l
end
print(x("test"))
... which prints "nil". Fine.
Now simply comment out the first line of x() (ie "z=0") and try again...
this time it prints "test".
It seems that the first line of x() can be any valid Lua statement other
than "l=nil" and all works fine. However, if this assignment is the
first line it just doesn't work. I am puzzled.
(In case you wonder why anyone would set a function parameter to nil:
the above is stripped down to the smallest code snippet that shows this
behaviour. The original stuff comes from a more complex wrapper around a
bunch of functions in the Lua runtime library.)
That's Lua 5.1.1 on a Win2k SP4 rollup box. I checked with both the
latest precompiled binaries and a locally compiled version.
--
cheers thomasl
web : http://thomaslauer.com/start