Difference between revisions of "Template:TryCatch/doc"
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Latest revision as of 14:39, 23 January 2013
This 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
