lua table - time complexity of metatable in Lua when accessing - 


  स्थानीय cls = {base = "base"} स्थानीय इन = {} cls .__ index = cls setmetatable (ins , सीएलएस)   
  ins.base  तक पहुंच की जटिलता क्या है?   
 
 
 आप आधिकारिक लुआ कार्यान्वयन से  O (1)  समय की जटिलता की अपेक्षा कर सकते हैं।  
  __ अनुक्रमणिका  मैनुअल से ली गई इस लिआ कोड के बराबर है:  
  फ़ंक्शन gettable_event (तालिका, कुंजी) स्थानीय प्रकार यदि तालिका (तालिका) == "तालिका" तो स्थानीय v = rawget (तालिका , कुंजी) यदि v ~ = शून्य तो वापस v अंत एच = मेटाटेबल (तालिका) .__ सूचकांक यदि h == शून्य तब वापस शून्य शून्य और दूसरा h = मेटाटेबल (तालिका) .__ अनुक्रमणिका यदि h == शून्य तब त्रुटि (एक · · · एक प्रकार के अंत (एच) == "फ़ंक्शन" फिर वापसी (एच (तालिका, कुंजी)) - अंत में हेन्डलर को वापस कॉल करें [कुंजी] - या अंत अंत पर पुनरावृत्ति ऑपरेशन  < / प्री> 
  __ सूचकांक  लुकअप में कोई छोर नहीं है, और चूंकि लुआ तालिकाओं का समर्थन किया जाता है हैश तालिकाओं, तालिका lookups आमतौर पर एक निरंतर-समय का संचालन होता है।

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