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hz <>于2017年1月18日周三 上午11:45写道:
is there a way to intercept the settable_event?

want to implement kind of getter/setter observer for a table (similar to the KVO in Cocoa). Is there a way to do this in pure lua?

local realobj = {}
local obj = setmetatable({}, { 
  __index = realobj, 
  __newindex = function(self, k, v)
    -- it's settable event for obj