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Add basic table ordered keys iterator

This commit is contained in:
AFCMS 2023-11-19 01:23:57 +01:00 committed by the-real-herowl
parent c183da7714
commit 2128dd4c15
1 changed files with 24 additions and 0 deletions

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@ -22,6 +22,30 @@ function table.update_nil(t, ...)
return t return t
end end
---Works the same as `pairs`, but order returned by keys
---
---Taken from https://www.lua.org/pil/19.3.html
---@generic T: table, K, V, C
---@param t T
---@param f? fun(a: C, b: C):boolean
---@return fun():K, V
function table.pairs_by_keys(t, f)
local a = {}
for n in pairs(t) do table.insert(a, n) end
table.sort(a, f)
local i = 0 -- iterator variable
local function iter() -- iterator function
i = i + 1
if a[i] == nil then
return nil
else
return a[i], t[a[i]]
end
end
return iter
end
local LOGGING_ON = minetest.settings:get_bool("mcl_logging_default", false) local LOGGING_ON = minetest.settings:get_bool("mcl_logging_default", false)
local LOG_MODULE = "[MCL2]" local LOG_MODULE = "[MCL2]"
function mcl_util.mcl_log(message, module, bypass_default_logger) function mcl_util.mcl_log(message, module, bypass_default_logger)