User:Kylu/qif
From Wikipedia, the free encyclopedia
Contents |
[edit] {{qif}} Logical Structure
Note: #comments are for my personal review only.
- Please don't try to make this template work, especially
- not with #comments in them!
- I'm just trying to make sense of a bit of esoteric template magic.
- Please feel free to ignore this page. It's not representitive of
- anything worth anything.
- Note: if {{qif}} is depreciated/orphaned, I would appreciate it if
- this page were not modified. Please, just let it break instead.
- More fun! Category:Esoteric templates
- Also, don't forget to check Locke's expansion on the discussion page!
[edit] Unexpanded (Original)
{{{else{{{test|}}}|{{{test{{{test|}}}|{{{then|}}}}}}}}}
[edit] Expanded (Probably nonsensical)
{
{
{else #`test` is empty, parse next arg[2].
{
{
{test|} #[2]this one.
}
}|{
{
{test #determine/parse `test`
{
{
{test|} #`test`
}
}|{
{
{then|} #`test` is not empty, parse argument[1] (same line)
}
}
}
}
}
}
}
}
q.v.: {{booleq}} and {{boolne}} (Boolean equality tests)
[edit] Usage (from Template Talk:Qif)
{{qif
|test=VARIABLE_OR_PARAMETER_TO_TEST
|then=code if 'test' is not empty
|else=code if 'test' is empty
}}
Parameter else is optional. So you may also do:
{{qif
|test=VARIABLE_OR_PARAMETER_TO_TEST
|then=code if 'test' is not empty
}}
[edit] Example (from Template Talk:Qif)
| Code | Result |
|---|---|
{{qif
|test={{boolne|foo|bar}}
|then=true
|else=false
}}
|
true |
{{qif
|test={{booleq|foo|bar}}
|then=true
|else=false
}}
|
false |
{{qif
|test=
|then=bar
}}
|
|
{{qif
|test=foo
|then=bar
}}
|
bar |
