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Metamethods are respected, but the returned table will have no metatable of its own. If you want to make a new table with no shared subtables and with metatables transferred, you can use mw.clone instead. If you want to make a new table with no shared subtables and without metatables transferred, use deepCopy with the noMetatable option.
This Lua module is used on approximately 1,010,000 pages, ... (a key from the L10n.para table) ... and remove empty args.
A table is a sequence, optionally supplemented by named keys: digit["two"]="2". Several table functions like table.concat will only work with the numbered values and ignore named keys. The metatable offers a large, optional set of methods for altering table behavior. For example, you can define a table to be callable like a function.
The C API also provides some special tables, located at various "pseudo-indices" in the Lua stack. At LUA_GLOBALSINDEX prior to Lua 5.2 [21] is the globals table, _G from within Lua, which is the main namespace. There is also a registry located at LUA_REGISTRYINDEX where C programs can store Lua values for later retrieval.
The use of metatables also has its downsides. Most of the normal Lua table tools won't work properly on the args table, including the # operator, the next() function, and the functions in the table library. If using these is important for your module, you should use your own argument processing function instead of this module.
A table is a structure that can contain other objects, including other tables. An empty table looks like {} in the code. Tables have keys and values, which are typically of the structure ["key"] = value; each key–value pair is separated by a comma. All keys used here are strings or numbers.
Nils all keys of the table referenced by clear and unsets its metatable. If clear evaluates false, this simply purges the cache at Buffer.last_concat. If given a table to copy, this will duplicate all key-value pairs of copy into clear, cloning any table value recursively via Buffer: _cc (0, value).
MySQL Workbench uses Lua for its extensions and add-ons. Neovim text editor offers Lua functionality as a replacement for Vimscript as a scripting language, both for plugin development and for user configuration. [18] NetBSD has a Lua driver that can create and control Lua states inside the kernel. This allows Lua to be used for packet ...