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Implementation of instanceof in Lua
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| function instanceOf (subject, super) | |
| super = tostring(super) | |
| local mt = getmetatable(subject) | |
| while true do | |
| if mt == nil then return false end | |
| if tostring(mt) == super then return true end | |
| mt = getmetatable(mt) | |
| end | |
| end |
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