Signaling Errors

• Use the function ERROR

  • (error “connection to server ~A is down” server)

• Use the function CERROR

  • (cerror “continue anyway” “connection to server ~A is down” server)

• Use the function SIGNAL

  • First argument names a class, the rest of the argument list is used in a call to make-instance
  • (signal ‘network-down :type :LAN)

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