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16.5.2 Condition Abstraction

The condition data type is abstracted through a predicate condition? and a set of accessor procedures.

procedure: condition? object ¶

Returns #f if and only if object is not a condition.

procedure: condition/type condition ¶

Returns the condition type of which condition is an instance.

procedure: condition/error? condition ¶

Returns #t if the condition is an instance of condition type condition-type:error or a specialization of it, #f otherwise.

procedure: condition/restarts condition ¶

Returns the list of restarts specified when condition was created.

procedure: condition/continuation condition ¶

Returns the continuation specified when condition was created. This is provided for inspecting the state of the system when the condition occurred, not for continuing or restarting the computation.

procedure: write-condition-report condition port ¶

Writes a description of condition to port, using the reporter function from the condition type associated with condition. See also condition/report-string.