How do I change a string into a table?
So I have a string that when I print it the output is: {1, 3}. However when I try to loop through that table it outputs this error: (table expected, got string). Is there any way to change that string back into a table? I tried tonumber but it didnt work. Could someone help me out here? Thanks!
Edit 1.
local function dumpTable(tableToDump)
local tbl = {}
if type(tableToDump) == "table" then
for i,v in pairs(tableToDump) do
table.insert(tbl, tostring(v))
end
return "{" .. table.concat(tbl, ", ") .. "}"
else
return nil
end
end
I did this because of the help of another scripting helper. Here is the link to that question. Here is the place I try to loop through the table:
local function findAMatch(savedItemsTable, item)
--if type(savedItemsTable) == "table" then
print("is a table")
for i,v in pairs(savedItemsTable) do
if v == item.ItemNumber.Value then
return true
else
return false
end
end
--else
--return false
--end
end
certain things are commented out just because it wasnt working and I wanted to see what was wrong. The if statement if it isnt commented out will not let the code continue because the type() of savedItemsTable is a string. Hope you guys can help. Thanks!
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1 answer
So you have a string, and in that string, you want to retrieve only the integers from it. This is a perfect example of matching through string patterns.
In your case, you have the following string: "{1, 3}"
...and you want only the integers to construct the following table: {1, 3}
Since you want all instances of integers that are found within the string, the string.gmatch function will be of great use. It will return an iterator function containing the series of substrings in our string that matche our specified pattern. In our case, our pattern will be %d+, because that will capture the series of continuous digits found in our string.
local s = "{1, 3}"
local newTable = {}
for int in string.gmatch(s, "%d+") do
table.insert(newTable, tonumber(int))
end
-- now, newTable = {1, 3}
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