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Use luajit table.clear properly

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Fixes #25
This commit is contained in:
Max Cahill 2021-06-29 14:46:40 +10:00
parent a2c7800290
commit 1de942daa8
1 changed files with 15 additions and 10 deletions
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25
tablex.lua
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@ -256,17 +256,22 @@ function tablex.dedupe(t)
return r
end
--(might already exist depending on luajit)
--(might already exist depending on environment)
if not tablex.clear then
--remove all values from a table
--useful when multiple references are being held
--so you cannot just create a new table
function tablex.clear(t)
assert:type(t, "table", "tablex.clear - t", 1)
local k = next(t)
while k ~= nil do
t[k] = nil
k = next(t)
local imported
--pull in from luajit if possible
imported, tablex.clear = pcall(require, "table.clear")
if not imported then
--remove all values from a table
--useful when multiple references are being held
--so you cannot just create a new table
function tablex.clear(t)
assert:type(t, "table", "tablex.clear - t", 1)
local k = next(t)
while k ~= nil do
t[k] = nil
k = next(t)
end
end
end
end