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Can I have some help with table.sort?
I'm having quite a bit of trouble creating a custom function for table.sort that I need to use since I'm sorting values that have both numbers and letters.
Here's what I have so far:
table.sort(backpackitems, function(a, b)
local aNum = tonumber(string.sub(a.Name, 8))
local bNum = tonumber(string.sub(b.Name, 8))
end)
After I get the number values from the strings, how do I put one table item in front of the other if its number is the larger of the two?
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The function argument to table.sort is asking "is a 'smaller than' b?"
It might be easier to think of it as a less function then:
function itemLess(a, b)
local function number(x)
return tonumber(x.Name:sub(8)) or math.huge
end
return number(a) < number(b)
end
table.sort(backpackitems, itemLess)
This itemLess you can pretend is like < and get what you'd expect:
itemLess({Name="abcdefgh12"}, {Name="abcdefgh20"}) --> true
itemLess({Name="abcdefgh12"}, {Name="abcdefgh11"}) --> false
itemLess({Name="abcdefgh100"}, {Name="abcdefgh20"}) --> true
itemLess({Name="abcdefgh200"}, {Name="abcdefgh10"}) --> false