#Issue with multidimensional table operations

1 messages · Page 1 of 1 (latest)

rotund oracle
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goal:
The function below takes in two tables, and applies an operation to the first table. For example:

local tbl1 = {{5}, {6}, {7}}
local tbl1Size = 2 --because it is a 2 dimensional table/matrix
local tbl2 = {3,3,3} 
local tbl2Size = 1 --because it is a 1 dimensional table


local function mul(a, b)
     return a * b
end

print(choppedOp(tbl1, tbl1Size, tbl2, tbl2Size, mul, 1))
--[[output:
{{15}, {18}, {21}}
]]

(see image at bottom for drawn out representation)

issue:
If the first table's depth (goalDimensions) is >= the otherData's depth (otherDimensions) this function works fine. The issue arises when otherDimensions is greater than goalDimensions, then the function will error.

code:

local function choppedOp(goalData: {}, goalDimensions: number, otherData: {}, otherDimensions: number, op: operation, dimension: number)
    if type(goalData) == "table" then
        if goalDimensions - otherDimensions - (dimension - 1) > 0 then
            for i = 1, #goalData do
                goalData[i] = choppedOp(goalData[i], goalDimensions, otherData, otherDimensions, op, dimension + 1)
            end
        else
            for i = 1, #goalData do
                goalData[i] = choppedOp(goalData[i], goalDimensions, (otherData[i] ~= nil) and otherData[i] or otherData[1], otherDimensions, op, dimension + 1)
            end
        end
    else
        goalData =  op(goalData, otherData)
    end

    return goalData
end
image.png
#

it works fine in the example i've shown. it won't work if you swap tbl1 and tbl2, because then you will be applying the operation to a table with less dimensions

rotund oracle
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h

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e

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l

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p

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🙏

rotund oracle
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nvm