Module:Sandbox/Artoria2e5/Fallback/doc explained

Usage

This module provides a function which adds fallback functionalities to a given table args according to the fallback sequence given in arg_aliases. Note that this module currently only supports indexing, i.e. __index.

Parameters

args: The table to add fallback functionalities.

arg_aliases: A table of the form { [key] = { fallback1, fallback2... } }.

Example

The following snippet adds template parameter aliases to a metatable obtained from .

local getArgs = require('Module:Arguments').getArgslocal makeFallback = require('Module:Sandbox/Artoria2e5/Fallback')local p =

function p.main(frame) local args = makeFallback(getArgs(frame),) -- Try calling this template with |foo=42. return (args["foo_bar"] or "nothing here!")end

return p

The following snippet shows basic usage of indexing fallback.

local makeFallback = require('Module:Arguments/Fallback')table =

makeFallback(table,)

return table["foo_bar"]

The following snippet creates a fallback list with all fallback names aliasing back to the main name.

local makeFallback = require('Module:Sandbox/Artoria2e5/Fallback')table = makeFallback(table,)return table["foo"]