On Wednesday, 1 October 2014 at 22:42:27 UTC, Jeremy Powers via Digitalmars-d wrote:
If you see "throws Exception" in java code chances are the code is broken, same as if you see "catch (Exception" - this tells you nothing about the exception that happened, and hence you can do nothing with it. So you either swallow (and silently break in many cases) or rethrow (and break for things you needn't have). As mentioned, the standard way to avoid this is to have a parent exception type appropriate to the abstraction in the API, and throw subtypes in the implementation. Among other things, this means you can change the implementation to throw different exceptions without breaking any users (who will already be catching the parent exception).
...while in Phobos, most of the subtyped exceptions were eliminated a while back in favor of just always throwing Exception.
