Condition State - MIT/GNU Scheme 9.0.1
Description: MIT/GNU Scheme 9.0.1

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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`.