Ron,
I think Miguel is trying to say that without the new syntax a division by zero
interrupts the execution of the code inside try-catch and gives control to the
code following the catch clause.
While with the new syntax it is able to return a value for the division by
zero operation and continue as if there was no error at all.
Maurilio.
Miguel Angel Marchuet wrote:
> As I see, I can't explain it with my English.
>
> There are recoverable errors as zero division. With the codeblock that I
> propose we can solve this problem and the code can
> continue without caching resolved exceptions.
>
> Actually this is simply impossible because this codeblock is harcoded to
> catch all errors.
>
> LOCAL b
>
> TRY WITH {|o| MyError( o ) }
>
> b := 1 / 0 // THIS ERROR IS NOT CACHED, b prints 0
>
> ...
>
> // the rest of code is executed
>
> ... // The rest of errors are cached
>
> CATCH oErr
> ...
> END TRY
>
> FUNCTION MyError( e )
>
> // by default, division by zero yields zero
> IF ( e:genCode == EG_ZERODIV )
> RETURN 0
> ENDIF
>
> RETURN .F.
>
> It is only an example of use.
>
>
> Ron Pinkas escribió:
>> Miguel,
>>
>> Sorry but you are mixing 2 different issues. The TRY construct in all
>> those languages will still raise the exception, if you have any error.
>> The CATCH syntax simply allows you to have different catchers for
>> different errors, at different levels. Those samples you posted
>> function exactly like this:
>>
>> TRY
>> ? a /0
>> CATCH e
>> SWITCH e:genCode
>> CASE EG_ZERODIV
>> ? "Caught division by 0"
>> EXIT
>>
>> DEFAULT
>> Throw( e )
>> END
>> FINALLY
>> ? " In finally"
>> END
>>
>
>
--
__________
| | | |__| Maurilio Longo
|_|_|_|____| farmaconsult s.r.l.
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