Module:TableTools: Difference between revisions
m>Mr. Stradivarius (finish sparseIpairs) |
m>Mr. Stradivarius (add getAffixNums function) |
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| Line 39: | Line 39: | ||
if isPositiveInteger(k) then | if isPositiveInteger(k) then | ||
nums[#nums + 1] = k | nums[#nums + 1] = k | ||
end | |||
end | |||
table.sort(nums) | |||
return nums | |||
end | |||
--[[ | |||
----------------------------------------------------------------------------------- | |||
-- getAffixNums | |||
-- | |||
-- This takes a table and returns an array containing the numbers of keys with the | |||
-- specified prefix and suffix. For example, for the table | |||
-- {a1 = 'foo', a3 = 'bar', a6 = 'baz'} and the prefix "a", getAffixNums will | |||
-- return {1, 3, 6}. | |||
----------------------------------------------------------------------------------- | |||
--]] | |||
function p.getAffixNums(t, prefix, suffix) | |||
prefix = prefix or '' | |||
suffix = suffix or '' | |||
local nums = {} | |||
for k, v in pairs(t) do | |||
if type(k) == 'string' then | |||
local num = mw.ustring.match(k, '^' .. prefix .. '([1-9]%d*)' .. suffix .. '$') | |||
if num then | |||
nums[#nums + 1] = tonumber(num) | |||
end | |||
end | end | ||
end | end | ||