6.3.90.900
15 Logging
NOTE: This library is deprecated; use racket/logging, instead. The contents of this module, with the exceptions below, have been merged with racket/logging.
| (require unstable/logging) | package: unstable-lib |
procedure
(start-recording log-spec ...) → listener?
log-spec : (or/c 'fatal 'error 'warning 'info 'debug symbol? #f)
procedure
(stop-recording listener)
→
(listof (vector/c (or/c 'fatal 'error 'warning 'info 'debug) string? any/c (or/c symbol? #f))) listener : listener?
start-recording starts recording log messages matching the given
log-spec (see make-log-receiver for how log-spec is
interpreted). Messages will be recorded until stopped by passing the returned
listener object to stop-recording. stop-recording will then
return a list of the log messages that have been reported.
Examples:
(define l (start-recording 'warning))
> (log-warning "1")
> (log-warning "2")
> (stop-recording l)
'(#(warning "1" #<continuation-mark-set> #f)
#(warning "2" #<continuation-mark-set> #f))