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From: Beman Dawes (bdawes_at_[hidden])
Date: 2004-09-10 14:47:33

At 02:19 PM 9/10/2004, Peter Dimov wrote:
>Beman Dawes wrote:
>> An attempt to query the attributes, such as
>> is_directory("pagefile.sys") would throw an exception, which can be
>> avoided by checking is_accessible("pagefile.sys").
>I'm not sure why would anyone want to omit the is_accessible check before

>calling is_directory.

In software which is specified to cope with even rare eventualities without
recourse to a general error catch, it probably shouldn't be omitted.

In applications which run in a very controlled and tightly specified
environment, anything not being accessible is virtually certain to be an
error condition, so just letting is_directory() throw is best for those

Another question is which other query functions also need to be protected
by an is_accessible() test in some applications?


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