TryCatch
Revision as of 20:01, 13 February 2012 by Amalthea (Talk) (Protected Template:TryCatch: Highly visible template: metatemplate ([edit=sysop] (indefinite) [move=sysop] (indefinite)))
Template documentationThis metatemplate simplifies implementing fallback output if an error occurs due to incorrect input. It returns the first parameter if it does not contain an error (using the #iferror parser function), and the second parameter (or the empty string) otherwise.
Usage
-
{{TryCatch|{{#expr: 1/2}}|Incorrect input}}→ 0.5 -
{{TryCatch|{{#expr: 1/0}}|Incorrect input}}→ Incorrect input
See also
- {{Error}}: template to signal an error
- Help:Extension:ParserFunctions
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