Re: hello and unpack() issue.
- From: Javier Guerra Giraldez <javier@xxxxxxxxxxx>
- To: LuaJIT <luajit@xxxxxxxxxxxxx>
- Date: Fri, 10 Sep 2021 09:23:00 -0500
On Fri, 10 Sept 2021 at 09:01, Matt Gerassimoff <mgeras@xxxxxxxxx> wrote:
`print(unpack({1,nil,2,nil,3,n=5}))`
I get:
`1`
from my version. When I do the same thing in lua 5.1 I get:
`1 nil 2 nil 3'
I've also tried lua 5.2 and beyond which returns the same results as 5.1.
I've tested this on x64 and arm64 architectures. I don't believe that would
be expected behaviour. If there is somewhere to submit bug reports, I'll
gladly do that.
unpack is defined in terms of the `#` operator
from the 5.1 docs: "The length of a table t is defined to be any
integer index n such that t[n] is not nil and t[n+1] is nil; moreover,
if t[1] is nil, n can be zero. For a regular array, with non-nil
values from 1 to a given n, its length is exactly that n, the index of
its last value. If the array has "holes" (that is, nil values between
other non-nil values), then #t can be any of the indices that directly
precedes a nil value (that is, it may consider any such nil value as
the end of the array)."
so, yes, it is expected behaviour.
--
Javier
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