Read a table from the bottom upwards?

[ronwilliams]

I have this:
Entries = TextFile.ReadToTable(OggsString);
EveryThreeLines = {};
for I = 1, Table.Count(Entries), 7 do
table.insert(EveryThreeLines, Entries[I]);
1 = Entries[1]
2 = Entries[2]
3 = Entries[3]
4 = Entries[4]

end

[Centauri Soldier]

OMG, please put tags around your code people....

Now, what exactly are you trying to do? Is that a seven step for a table called EveryThreeLines? I'm entirely confused.

[ronwilliams]

Sorry, I would like to read a text file to a table and then read and remove the the lines from that table starting at the bottom, not the top.
Hope that makes more sense.
Ron

[Centauri Soldier]

Ok,
So if I had a table like this (assuming it has already been read from the text file)

local tTable = {};
tTable[1] = "First Entry";
tTable[2] = "Second Entry";
tTable[3] = "Third Entry";
tTable[4] = "Fourth Entry";
tTable[5] = "Fifth Entry"; 

I would do something like this...

local tNewTable = {};

if tTable then
local nTotal = Table.Count(tTable);

    for x = 1, nTotal do
    -- I left 'nIndex' here as a local so you can see
    -- what is going on and in case you want to create sub tables.
    local nIndex = (nTotal - x) + 1; 
    tNewTable[x] = tTable[nIndex];
    end

end 

This is air code...make sure ya test it. Hope that helps.

[Sakuya]

local tTable = {"First Entry", "Second Entry", "Third Entry", "Fourth Entry", "Fifth Entry"};

local tReversed = {};

for K = #tTable, 1, -1 do
	table.insert(tReversed, tTable[K]);
end

Tested here, seems to work.

[ronwilliams]

Thanks guys! It works. Sorry for the confusion! Will try and structure my questions better in the future.
Ron

[Centauri Soldier]

Wow! That is too cool. You always have some neat little lua trick up your sleeve dontcha, Sakuya?

[Dermot]

Wow! That is too cool. You always have some neat little lua trick up your sleeve dontcha, Sakuya?

Its not a trick, its in the help file under for loops. Its just looping backwards.

[Centauri Soldier]

So it is. I mustv'e read that section a hundred times, but long ago before I knew anything about proper coding. Although I use the help file often for specific functions, it appears I need a refreshing overview of some of the highlight sections again.