-- The MIT License (MIT) -- -- Copyright (c) 2014, Cyril David -- -- Permission is hereby granted, free of charge, to any person obtaining a copy -- of this software and associated documentation files (the "Software"), to deal -- in the Software without restriction, including without limitation the rights -- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -- copies of the Software, and to permit persons to whom the Software is -- furnished to do so, subject to the following conditions: -- -- The above copyright notice and this permission notice shall be included in -- all copies or substantial portions of the Software. -- -- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -- THE SOFTWARE. local function equal(x, y) local t1, t2 = type(x), type(y) -- Shortcircuit if types not equal. if t1 ~= t2 then return false end -- For primitive types, direct comparison works. if t1 ~= 'table' and t2 ~= 'table' then return x == y end -- Since we have two tables, make sure both have the same -- length so we can avoid looping over different length arrays. if #x ~= #y then return false end -- Case 1: check over all keys of x for k,v in pairs(x) do if not equal(v, y[k]) then return false end end -- Case 2: check over `y` this time. for k,v in pairs(y) do if not equal(v, x[k]) then return false end end return true end return equal