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