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USA-NJ-ELIZABETH Κατάλογοι Εταιρεία
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Εταιρικά Νέα :
- 如何简单易懂地解释 Lua 的元表（metatable）？ - 知乎
首先，lua中的每个值都可以有一个metatable，metatable就是一个表。metatable定义了这个值执行某些特定操作时的行为。比如，当你对一个值进行“相加”的操作时，lua会查找这个值的metatable中是否存在“__add”为key的函数，如果存在，则调用它来执行这个
- All you need to know about Metatables and Metamethods
Metatables! Truly an interesting subject Through my activity in different forums and discord servers, I have seen many people get confused, on what they are Main reason being, not a super wide collection of resources exist explaining them, and in general the idea of metatables is different and unique for someone who is still baby-sitted by how straight forward Luau is I Metatables There
- Understanding Metatables, with practical use cases - Roblox
Introduction Many developers are confused by metatables, as they are not very intuitive, and their use cases not always clear I’ll go over what exactly are metatables, some practical use cases like OOP and other fun stuff 😉 How to use Metatables I think it’s important to first know how to turn a normal table into a metatable To make a metatable, you (usually) need two tables The first
- metatable - Lua __metatable bypass? - Stack Overflow
lua_setmetatable from the C API would work too And some metatables are reused as index tables (something like mt __index = mt) -- in that case you can simply set aTable __index __metatable = nil to remove the protection
- Difference between table in __index field and metatable
From my understanding, metatables are supposed to be tables comprised only of metamethods (__newindex, __index, __add, etc ) But the example has __index as a field of the Account class, which by this point, is not a metatable and doesn't have a metatable assigned to it such that the assignment looks up another metatable, if that makes sense
- What are meta tables and what are some examples to use them . . . - Roblox
Another remark: you aren’t forced to use only the special keys (such as __index) in a metatable A metatable is a table like any other, except it’s closely associated with another table and can be gotten by using getmetatable on that table Metatables also aren’t the only way to do most of the things they’re used for
- Adding a userdata metatable to a lua table - Stack Overflow
The idea of using a normal table with a userdata metatable seems like the way to implement this (but I'd be quite happy to use a different solution) – Phil Lello Commented Jan 11, 2015 at 20:22
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