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While Lua allows the true and false boolean values, wikicode templates can only express boolean values through strings such as "yes", "no", etc. This module processes these kinds of strings and turns them into boolean input for Lua to process. It also returns nil values as nil, to allow for distinctions between nil and false. The module also ...
It creates a local variable named p on line 1, initialized to a table; builds and adds a function to it (lines 3–5), by giving the function the name India in the table named by p (function p. India being the same as saying p [ "India" ] = function [ d ] ); and then returns (on line 7) the table as the last line of the script.
Unlike in wikicode, Lua does not use functions like #ifexpr and #expr. Add the Lua operators and functions straight into your module. Add the Lua operators and functions straight into your module. See mw:Help:Calculation for details on how #expr and mw . ext .
Lua patterns deliberately lack the most complex regular expression constructs (to avoid bloating the Lua code base), where many other computer languages or libraries use a more complete set. Lua patterns are not even a subset of regular expressions, as there are also discrepancies, like Lua using the escape character % instead of \, , and ...
Only false and nil are false. Even "" is true. Tables can have both numeric and string entries. The two don't overlap. t [1] is distinct from t ["1"]. Uninitialized variables and nonexistent fields in tables are nil. or and and both have shortcut evaluation. = is assignment, == is equality comparison. not is boolean negation, but ~= is ...
ValueMatcher. notNil = createMatcher (function (value) if value == nil then return false, 'was nil.' else return true end end)--- Matches a specific value type. ValueMatcher . matchType = function ( typeName ) return createMatcher ( function ( value ) if type ( value ) == typeName then return true else return false , ( 'was not a %s, but a %s ...
Lua 1.0 was designed in such a way that its object constructors, being then slightly different from the current light and flexible style, incorporated the data-description syntax of SOL (hence the name Lua: Sol meaning "Sun" in Portuguese, and Lua meaning "Moon").
-- This module is intended to replace the functionality of Template:Formatnum and related templates. local p = {} function p. main (frame) local args = frame: getParent (). args local prec = args. prec or '' local sep = args. sep or '' local number = args [1] or args. number or '' local lang = args [2] or args. lang or ''-- validate the language parameter within MediaWiki's caller frame if ...