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class · Ruby 3.1

StandardError

< Exception

The most standard error types are subclasses of StandardError. A rescue clause without an explicit Exception class will rescue all StandardErrors (and only those).

Example

def foo
  raise "Oups"
end
foo rescue "Hello"   #=> "Hello"

On the other hand:

Example

require 'does/not/exist' rescue "Hi"

raises the exception:

LoadError: no such file to load -- does/not/exist