The Right Approach to Exceptions
Jonathan M Davis
jmdavisProg at gmx.com
Sun Feb 19 15:28:50 PST 2012
On Sunday, February 19, 2012 18:48:02 address_is at invalid.invalid wrote:
> I guess "transient" is more descriptive.
Actually, thinking on it some more, I don't think that transient will work at
all, and the reason is simple. _Which_ operation should you retry? You don't
even necessarily know which function the exception came from out of the
functions that you called within the try block - let alone which function
actually threw the exception. Maybe it was thrown 3 functions deep from the
function that you called, and while retrying that specific call 3 functions
down might have made sense, retrying the function 3 functions up doesn't
necessarily make sense at all.
Whether or not you can retry or retrying makes any sense at all is _highly_
dependent on who actually catches the exception. In many cases, it may be a
function which could retry it, but in many it won't be, and so having the
exception tell the caller that it could retry would just be misleading.
- Jonathan M Davis
More information about the Digitalmars-d