Catch multiple specific exception types in Dart with one catch expression

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南旧
南旧 2021-02-12 20:39

I know I can catch a specific Exception type in dart with the following:

try {
  ...
} on SpecificException catch(e) {
  ...
}

But is there a w

2条回答
  •  Happy的楠姐
    2021-02-12 20:59

    You can only specify one type per on xxx catch(e) { line or alternatively use catch(e) to catch all (remaining - see below) exception types. The type after on is used as type for the parameter to catch(e). Having a set of types for this parameter wouldn't work out well.

    try {
      ...
    } on A catch(e) {
      ...
    } on B catch(e) {
      ...
    } catch(e) { // everything else
    }
    

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