Template:TryCatch

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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