need help with for .... in pairs

[Ketlambek]

Hi Guys! Sorry, I'm bad in English.

I'm trying to change the stack size for some items. I have this code:

Code: Select all

--data-final-fixes.lua
local items = data.raw.item

function get_stack_size(str)
	-- if the specified name has such a substring, then return the specified stack size
	if str:find("transport-belt") ~= nil then return settings.startup["Ket-transport-belt-stack-size"].value end
	return nil
end

local size = nil
for i, e in pairs(items) do
	size = get_stack_size(e.name)
	if size ~= nil then
		e.stack_size = size
		size = nil
	end
end

but nothing change... It seems to me that in "e" is not an item structure and in "i" is not an index of items array. Or is the problem something else?

UPD: I understand that problem is not with "e" and "i". If I use item internal name in condition operator then stack size is already changes. Why it doesn't works with finding a substring?

[DaveMcW]

The following combinations are allowed in describing a character class:
x: where x is not one of the magic characters ^$()%.[]*+-?
%x: (where x is any non-alphanumeric character) represents the character x. This is the standard way to escape the magic characters.

To search for - in a string, you need to escape it.

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str:find("transport%-belt")

[eradicator]

Or use plaintext find mode.

Code: Select all

str:find("transport-belt", 1, true)

[Ketlambek]

thanks everyone for solutions! I use eradicator's method before reading his reply.

[Mernom]

You could also iterate over all transport-belt type entities and find their item-to-place-this, no?

[Ketlambek]

Then I did so, and then I abandoned the mod...