Difference between revisions of "Template:If either/doc"
imported>Hyacinth m (* {{tl|if either}}) |
imported>Sardanaphalus (replaced/corrected <tt>, corrected example, some formatting) |
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{{Documentation subpage}} | {{Documentation subpage}} | ||
| − | <!-- PLEASE ADD CATEGORIES | + | <!----PLEASE ADD CATEGORIES WHERE INDICATED AT THE BOTTOM OF THIS PAGE----> |
| − | + | __NOTOC__ __NOEDITSECTION__ | |
| + | This [[Help:Templates/Helper templates|helper template]] is designed to be used in other templates. It can help editors create template code that or self documenting. The major advantage of using this template over using the construct {{nowrap|<code><nowiki>{{#if:{{{1|}}}{{{2|}}} |...}}</nowiki></code>}} is that if the first parameter is not empty then the second parameter is not evaluated. | ||
| − | + | It can also be used to replace the construct {{nowrap|<code>{{((}}#if:'''''a''''' {{!}}true {{!}}{{((}}#if:'''''b''''' {{!}}true {{!}}false{{))}} {{))}}</code>}} (i.e. "if '''''a''''', then true; else if '''''b''''', then true; else false"). | |
| − | == | + | == Syntax and interpretation == |
| − | |||
| − | + | <code class="nowrap">{{((}}if either {{!}}''a'' {{!}}''b'' {{!}}''output if (a or b) true'' {{!}}''output if (a or b) false''{{))}}</code> | |
| − | + | The "or" in "a or b" is [[Logical disjunction|inclusive]]: if both ''a'' '''and''' ''b'' are true, the template will return the first output (''output if ... true''). | |
| − | + | == Examples == | |
| + | <code> | ||
| + | <nowiki>{{if either |a |b |true |false}}</nowiki> → {{if either |a |b |true |false}} | ||
| − | + | <nowiki>{{if either |a | |true |false}}</nowiki> → {{if either |a | |true |false}} | |
| − | |||
| − | <nowiki>{{if either| a | | ||
| − | <nowiki>{{if either| | + | <nowiki>{{if either | |b |true |false}}</nowiki> → {{if either | |b |true |false}} |
| − | <nowiki>{{if either| | | + | <nowiki>{{if either | | |true |false}}</nowiki> → {{if either | | |true |false}} |
| + | </code> | ||
| − | + | == See also == | |
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* {{tl|if all}} | * {{tl|if all}} | ||
* {{tl|if both}} | * {{tl|if both}} | ||
| − | * {{tl|if | + | * {{tl|if empty}} |
| − | |||
<includeonly> | <includeonly> | ||
| − | <!-- CATEGORIES | + | <!----CATEGORIES BELOW THIS LINE, PLEASE:----> |
[[Category:If-then-else templates]] | [[Category:If-then-else templates]] | ||
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| − | |||
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</includeonly> | </includeonly> | ||
Revision as of 11:07, 9 July 2014
| 40px | This is a documentation subpage for Template:If either. It contains usage information, categories and other content that is not part of the original template page. |
This helper template is designed to be used in other templates. It can help editors create template code that or self documenting. The major advantage of using this template over using the construct {{#if:{{{1|}}}{{{2|}}} |...}} is that if the first parameter is not empty then the second parameter is not evaluated.
It can also be used to replace the construct {{#if:a |true |{{#if:b |true |false}} }} (i.e. "if a, then true; else if b, then true; else false").
Syntax and interpretation
{{if either |a |b |output if (a or b) true |output if (a or b) false}}
The "or" in "a or b" is inclusive: if both a and b are true, the template will return the first output (output if ... true).
Examples
{{if either |a |b |true |false}} → true
{{if either |a | |true |false}} → true
{{if either | |b |true |false}} → true
{{if either | | |true |false}} → false
See also