The Right Approach to Exceptions

Juan Manuel Cabo juanmanuel.cabo at gmail.com
Mon Feb 20 11:17:58 PST 2012


I like the idea!

Remember please for anyone reading: Use positional arguments in
format strings. Otherwise:

	"The '%s' file's size is %d which is wrong"

        translated to

	"El tamaño %d es incorrecto para el archivo %s"

will be trouble. Instead please do:

        "The '%1$s' file's size is %2$d which is wrong"

specially for standard library messages. This would be very helpful!

--jm



> into this:
>
> try
>     getopt(args, ...)
> catch(Exception e)
> {
>     stderr.writeln(stringTemplate(typeid(e).toString(), e.info));
>     return -1;
> }
>
> The stringTemplate function loads the formatting template from a table indexed on typeid(e).toString() and formats it
> with the info. It's simple factorization.
>
>
> Andrei




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