Module:TableTools: Difference between revisions
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(remove an unnecessary table.sort from compressSparseArray) |
(use fooBar for function names instead of getFooBar) |
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--[[ |
--[[ |
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------------------------------------------------------------------------------------ |
------------------------------------------------------------------------------------ |
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-- |
-- union |
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-- |
-- |
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-- This returns the union of the values of n tables, as an array. For example, for |
-- This returns the union of the values of n tables, as an array. For example, for |
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-- the tables {1, 3, 4, 5, foo = 7} and {2, bar = 3, 5, 6}, |
-- the tables {1, 3, 4, 5, foo = 7} and {2, bar = 3, 5, 6}, union will return |
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-- {1, 2, 3, 4, 5, 6, 7}. |
-- {1, 2, 3, 4, 5, 6, 7}. |
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------------------------------------------------------------------------------------ |
------------------------------------------------------------------------------------ |
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--]] |
--]] |
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function p. |
function p.union(...) |
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local tables = {...} |
local tables = {...} |
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local vals, ret = {}, {} |
local vals, ret = {}, {} |
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| Line 59: | Line 59: | ||
--[[ |
--[[ |
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------------------------------------------------------------------------------------ |
------------------------------------------------------------------------------------ |
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-- intersection |
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-- getIntersection |
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-- |
-- |
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-- This returns the intersection of the values of n tables, as an array. For |
-- This returns the intersection of the values of n tables, as an array. For |
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-- example, for the tables {1, 3, 4, 5, foo = 7} and {2, bar = 3, 5, 6}, |
-- example, for the tables {1, 3, 4, 5, foo = 7} and {2, bar = 3, 5, 6}, |
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-- |
-- intersection will return {3, 5}. |
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------------------------------------------------------------------------------------ |
------------------------------------------------------------------------------------ |
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--]] |
--]] |
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function p. |
function p.intersection(...) |
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local tables = {...} |
local tables = {...} |
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local vals, ret = {}, {} |
local vals, ret = {}, {} |
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| Line 87: | Line 87: | ||
--[[ |
--[[ |
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------------------------------------------------------------------------------------ |
------------------------------------------------------------------------------------ |
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-- |
-- numKeys |
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-- |
-- |
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-- This takes a table and returns an array containing the numbers of any numerical |
-- This takes a table and returns an array containing the numbers of any numerical |
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------------------------------------------------------------------------------------ |
------------------------------------------------------------------------------------ |
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--]] |
--]] |
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function p. |
function p.numKeys(t) |
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local isPositiveInteger = p.isPositiveInteger |
local isPositiveInteger = p.isPositiveInteger |
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local nums = {} |
local nums = {} |
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| Line 107: | Line 107: | ||
--[[ |
--[[ |
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------------------------------------------------------------------------------------ |
------------------------------------------------------------------------------------ |
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-- affixNums |
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-- getAffixNums |
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-- |
-- |
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-- This takes a table and returns an array containing the numbers of keys with the |
-- This takes a table and returns an array containing the numbers of keys with the |
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-- specified prefix and suffix. For example, for the table |
-- specified prefix and suffix. For example, for the table |
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-- {a1 = 'foo', a3 = 'bar', a6 = 'baz'} and the prefix "a", |
-- {a1 = 'foo', a3 = 'bar', a6 = 'baz'} and the prefix "a", affixNums will |
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-- return {1, 3, 6}. |
-- return {1, 3, 6}. |
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------------------------------------------------------------------------------------ |
------------------------------------------------------------------------------------ |
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--]] |
--]] |
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function p. |
function p.affixNums(t, prefix, suffix) |
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prefix = prefix or '' |
prefix = prefix or '' |
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suffix = suffix or '' |
suffix = suffix or '' |
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| Line 142: | Line 142: | ||
function p.compressSparseArray(t) |
function p.compressSparseArray(t) |
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local ret = {} |
local ret = {} |
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local nums = p. |
local nums = p.numKeys(t) |
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for _, num in ipairs(nums) do |
for _, num in ipairs(nums) do |
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ret[#ret + 1] = t[num] |
ret[#ret + 1] = t[num] |
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| Line 158: | Line 158: | ||
--]] |
--]] |
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function p.sparseIpairs(t) |
function p.sparseIpairs(t) |
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local nums = p. |
local nums = p.numKeys(t) |
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local i = 0 |
local i = 0 |
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local lim = #nums |
local lim = #nums |
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