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added tablex.shallow_equal and tablex.deep_equal, slow functions for content-based (in)equality of different tables
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42
tablex.lua
42
tablex.lua
@ -408,6 +408,48 @@ function tablex.collapse(t)
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return r
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end
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--check if two tables have equal contents at the first level
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--slow, as it needs two loops
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function tablex.shallow_equal(a, b)
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if a == b then return true end
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for k, v in pairs(a) do
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if b[k] ~= v then
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return false
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end
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end
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for k, v in pairs(b) do
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if a[k] ~= v then
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return false
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end
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end
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return true
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end
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--check if two tables have equal contents all the way down
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--slow, as it needs two potentially recursive loops
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function tablex.deep_equal(a, b)
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if a == b then return true end
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--not equal on type
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if type(a) ~= type(b) then
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return false
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end
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--bottomed out
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if type(a) ~= "table" then
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return a == b
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end
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for k, v in pairs(a) do
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if not tablex.deep_equal(v, b[k]) then
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return false
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end
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end
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for k, v in pairs(b) do
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if not tablex.deep_equal(v, a[k]) then
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return false
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end
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end
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return true
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end
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--alias
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tablex.flatten = tablex.collapse
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