Alex: Created page with " -- Ordered table iterator, allow to iterate on the natural order of the keys of a -- table. local p = {} function __genOrderedIndex( t ) local orderedIndex = {} for key in pairs(t) do table.insert( orderedIndex, key ) end table.sort( orderedIndex ) return orderedIndex end function orderedNext(t, state) -- Equivalent of the next function, but returns the keys in the alphabetic -- order. We use a temporary ordered key table that is..."

2024-10-16T23:13:23Z

Created page with " -- Ordered table iterator, allow to iterate on the natural order of the keys of a -- table. local p = {} function __genOrderedIndex( t ) local orderedIndex = {} for key in pairs(t) do table.insert( orderedIndex, key ) end table.sort( orderedIndex ) return orderedIndex end function orderedNext(t, state) -- Equivalent of the next function, but returns the keys in the alphabetic -- order. We use a temporary ordered key table that is..."

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-- Ordered table iterator, allow to iterate on the natural order of the keys of a
-- table.

local p = {}

function __genOrderedIndex( t )
local orderedIndex = {}
for key in pairs(t) do
table.insert( orderedIndex, key )
end
table.sort( orderedIndex )
return orderedIndex
end

function orderedNext(t, state)
-- Equivalent of the next function, but returns the keys in the alphabetic
-- order. We use a temporary ordered key table that is stored in the
-- table being iterated.

local key = nil
--print("orderedNext: state = "..tostring(state) )
if state == nil then
-- the first time, generate the index
t.__orderedIndex = __genOrderedIndex( t )
key = t.__orderedIndex[1]
else
-- fetch the next value
for i = 1,table.getn(t.__orderedIndex) do
if t.__orderedIndex[i] == state then
key = t.__orderedIndex[i+1]
end
end
end

if key then
return key, t[key]
end

-- no more value to return, cleanup
t.__orderedIndex = nil
return
end

function p.opairs(t)
-- Equivalent of the pairs() function on tables. Allows to iterate
-- in order
return orderedNext, t, nil
end

return p

Module:Utils - Revision history