Mailinglist Archive: yast-devel (81 mails)

[Klaus Kaempf <kkaempf@xxxxxxx>]

Hi,

when calling functions known to raise exceptions, its always good
practice to enclose calls with begin ... rescue ... end and catch
exceptions locally.

Catching exceptions should cover known problems (i.e. missing
permissions) as well as generic problems.

Example:


WRONG:

   call_function_which_might_raise
   
   
NOT ENOUGH:

   begin
     call_function_which_might_raise
   rescue KnownException => e
     handle_known_exception e
   end
   
GOOD:

   begin
     call_function_which_might_raise
   rescue KnownException => e
     handle_known_exception e
   rescue Exception => e
     handle_generic_exception e
   end
   
   
The 'wrong' and 'not enough' cases validate bug reports.

Klaus
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