Boriss Mejias wrote:
I was wondering about the difference between exceptions raised by
dictionaries and arrays. I'm looking at the code of the builtins, and
exceptions raised by arrays due to out-of-range indexes are built as
follows (look at platform/emulator/builtins.cc lines 402 and 424):
oz_raise(E_ERROR,E_KERNEL,"array",2,array,index);
but dictionaries used a different flag (look at
platform/mulator/dictionaries.cc lines 611 and 643):
oz_raise(E_SYSTEM,E_KERNEL,"dict",2,d,k);
My question is: Why does dictionaries need E_SYSTEM flag instead of
E_ERROR??
That's a bug. The principles are documented here:
http://www.mozart-oz.org/documentation/tutorial/node5.html#control.sysexcept
Cheers,
raph
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