Search results
Results from the WOW.Com Content Network
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 ...
String operations trade space for time. Don't repeatedly concatenate onto the end of a string. Build up its individual parts in a table and use table.concat (). * by the reciprocal is faster than /. return and break can only occur at the end of a block. There's no continue. There's no goto. next is a global variable, not a keyword. By default ...
This help-page, Help:Lua debugging, explains issues of writing Lua script and debugging the source code, to remove errors or improve performance. Because Lua is a "semi-compiled" interpreted language, it does not prescreen for all common syntax errors, nor detect misspelled variables, which are only found at runtime when seeing the " Script ...
The module also uses string.format to join the strings together, but you could just as easily use .., Lua's concatenation operator. ( 'ab' .. 'cd' will give you the string "abcd".) The sandbox is simpler, but it isn't as elegant if something goes wrong - try putting a bad code into both of them to see what I mean.
The strings over an alphabet, with the concatenation operation, form an associative algebraic structure with identity element the null string—a free monoid. Sets of strings with concatenation and alternation form a semiring, with concatenation (*) distributing over alternation (+); 0 is the empty set and 1 the set consisting of just the null ...
This Lua module is used on approximately 234,000 pages. To avoid major disruption and server load, any changes should be tested in the module's /sandbox or /testcases subpages, or in your own module sandbox. The tested changes can be added to this page in a single edit. Consider discussing changes on the talk page before implementing them.
This Lua module is used in system messages, and on approximately 11,000,000 pages, or roughly 18% of all pages. Changes to it can cause immediate changes to the Wikipedia user interface. To avoid major disruption and server load, any changes should be tested in the module's /sandbox or /testcases subpages, or in your own module sandbox .
Lua is a programming language that is available via the Scribunto MediaWiki extension on the English Wikipedia. Since February 2013, Lua code can be embedded into wiki templates by employing the "{{#invoke:}}" functionality of Scribunto. This extension supports Lua 5.1 as of October 2022.