Hi,
I have some data which if I sort it only once, the result is not
correct (i.e. some fields are at wrong places), and if I sort it
twice, it is correct.
On the other hand, for some other data, if I try to sort it twice, on
the second pass the comparator will receive nil for one of its inputs.
I didn't expect to have any nil values, or non-contiguous indices,
since all the tables are loaded exclusively through
table.insert(table, value) (i.e. appended to the end).
I have even tried to rewrite the tables with explicite indices before
sorting like this:
local newByIndex = {};
local newI = 0;
for i, cvar in ipairs(self.byIndex) do
if cvar ~= nil then
newI = newI+1;
newByIndex[newI] = cvar;
end
end
table.setn(newByIndex, newI);
table.sort(newByIndex, compareCvars);
table.sort(newByIndex, compareCvars);
But I still get nils on the second sort.
This is in Lua 5.0. Is this a known problem that was fixed for 5.1?
Would upgrading to 5.1 help? (I'm not too eager to try that without a
reason, since I expect a lot of problems with changed behavior in
gsub.)
Thanks in advance,
Alen
