Search results
Results from the WOW.Com Content Network
final output is before EMPTY after. Text before and after is added because when contains EM (for empty). {{Infobox some thing|image=Green pog.svg}} final output is the equivalent of [[File:Green pog.svg|30px]]. Text before and after is not added because when does not contain NE (for not empty
The functions are simple data validation and data type checking functions. The data validation functions determine whether it is possible to convert or coerce the data value given as an argument to the function to the type implied by the function name, and return a Boolean value recording whether it was possible or not.
If any of the parameters in the chain of fallback values (in the first construct) have been set to an empty value (or only whitespace) in the template call, then that empty value will be used instead of "falling back" to the next parameter in the chain. So, for example, if the template is called in either of these two ways:
Parameters used with {{if empty}} must be piped – i.e. include the vertical bar (pipe) symbol (" | ") as a trailing character – so that empty or undefined parameters aren't treated as text and returned incorrectly.
The detailed semantics of "the" ternary operator as well as its syntax differs significantly from language to language. A top level distinction from one language to another is whether the expressions permit side effects (as in most procedural languages) and whether the language provides short-circuit evaluation semantics, whereby only the selected expression is evaluated (most standard ...
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
Returns true if the first parameter is assigned no value. It can be useful in de- obfuscating wiki markup. It was created to facilitate adding tracking categories.
This is a documentation subpage for Module:If empty. It may contain usage information, categories and other content that is not part of the original module page. This module can only be edited by administrators because it is transcluded onto one or more cascade-protected pages.