Module:TableTools: Difference between revisions
clone tn rather than returning an altered tn
m>Mr. Stradivarius (add a complement function) |
m>Mr. Stradivarius (clone tn rather than returning an altered tn) |
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| Line 211: | Line 211: | ||
error("only one argument passed to 'complement' (minimum is two)", 2) | error("only one argument passed to 'complement' (minimum is two)", 2) | ||
end | end | ||
--[[ | |||
-- Now we know that we have at least two sets. | -- Now we know that we have at least two sets. | ||
local | -- First, get all the key/value pairs in tn. We can't simply make ret equal to tn, | ||
checkType('complement', lim, | -- as that will affect the value of tn for the whole module. | ||
--]] | |||
local tn = select(lim, ...) | |||
checkType('complement', lim, tn, 'table') | |||
local ret = {} | |||
for k, v in pairs(tn) do | |||
ret[k] = v | |||
end | |||
-- Remove all the key/value pairs in t1, t2, ..., tn-1. | |||
for i = 1, lim - 1 do | for i = 1, lim - 1 do | ||
local t = select(i, ...) | local t = select(i, ...) | ||