diff options
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 19 |
1 files changed, 18 insertions, 1 deletions
@@ -40960,7 +40960,11 @@ subtype of every exception type: .verb t ----+--- warning | - +--- restart --- continue + +--- restart ---+--- continue + | | + | +--- retry + | | + | +--- skip | +--- error ---+--- type-error | @@ -41004,6 +41008,19 @@ type. The type is intended to be the root of a hierarchy of exception types used for denoting restart points: designers are encouraged to derive restarts from this type. +A catch for the +.code continue +exception should be established around constructs which can throw an +error from which it is possible to recover. That exception provides +the entry point into the recovery which resumes execution. +A catch for +.code retry +should be provided in situations when it is possible and makes sense for a failed +operation to be tried again. +A catch for +.code skip +should be provided in situations when it is possible and sensible to continue +with subsequent operations even though an operation has failed. .NP* Dialect Notes |