Re: [boost] Review Request: Filesystem Library

From: Beman Dawes (bdawes_at_[hidden])
Date: 2002-08-01 10:53:53

At 04:23 AM 8/1/2002, Mattias Flodin wrote:

 >> ( This being much preferable to an attempt to avoid the exception by
 >> doing if ( exists( ph ) ) remove( ph ) ; and the post condition not
 >> being true )
 >
 >This kind of code is dangerous because the two subexpressions of the
 >condition are not evaluated in one atomic operation. Perhaps the
 >documentation should mention this, to prevent people from trying it.
 >exists() must be true at the point of calling remove(), not 0.5
 >nanoseconds before.

That's what index.htm#Dangers was supposed to explain.

--Beman