Template talk:Ifdef
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Usage
{{Ifdef|value|result}}
yields result if value isn't blank.
This template is used to simplify the following equivalent but somewhat cryptic code variants:
{{{1{{{1|}}}|{{{2}}}}}}{{{value{{{value|}}}|{{{result}}}}}}{{{test{{{test|}}}|{{{then}}}}}}
Example
| Code | Result |
1 {{Ifdef| |empty}}
|
1 |
2 {{Ifdef|x|gotcha}}
|
2 gotcha |
3 {{Ifdef| {{{1| }}} | {{{1| }}} undefined}}
|
3 |
4 {{Ifdef| {{{1|x}}} | {{{1|x}}} for an u}}
|
4 x for an u |
5 {{Ifdef| {{{ 1 }}} | {{{1}}} bad idea}}
|
5 {{{1}}} bad idea |
For more info see: meta.wikimedia.org Ifdef
