Template:Ifor

From Wikipedia, the free encyclopedia

[edit] Purpose

This template applies a logic function to the contents of the two parameters test1 and test2 to return a then or else pass-in parameter.

• 'then' and 'else' must be defined in the call of the template by |then= something |else= something else

[edit] Usage

{{ifor|test1=|test2=|val1=|val2=|then=|else=}}

If 'test1' equals 'val1' OR 'test2' equals 'val2' the value of 'then' will be displayed. Otherwise, the value of 'else' will be displayed.

• 'displayed' in the case, can be treated as a return value,

... |then=true|else=}}

returns either a null string (nothing) or a true value, which can be tested inside an if statement for branching

Use in branching (example)

<!--   Note the literal code below would likely malfunction 
       as it contains newlines (included to show and illustrate
       the nesting behavior of the template within the parser function.
       The first (outer) if uses inline commenting to eliminate that 
       particular issue and would work well, as the preprocessor just 
       throws them away. The inner, second, if is inside the ifor template.
--><!--
-->{{#if:{{ifor{{|test1={{FULLPAGENAME}}
        |test2={{PAGENAME}}
        |val1=Wikipedia:Templates
        |val2=Templates/Examples|then=TRUE
       }}<!-- (though it's best to leave the trailing 
                 else off entirely, |else=}} is fine.)
-->|Do something<!--
-->|Do a different something<!--
-->}}