Re: We do not use C++ exceptions

Le Chaud Lapin <>
Tue, 3 Feb 2009 09:09:06 CST
On Feb 3, 12:06 am, (Stefan Ram) wrote:

Seungbeom Kim <> writes:

if (!fexists(fn)) {
   // error: file not exists


else {
   // finally we know we can open the file
   FILE* fp = fopen(fn, "r");
   // let's hope this succeeded

   The filesystem might have changed in the meantime.

That's why Seungbeom wrote:

          // finally we know we can open the file
          // but if somehow we cannot, because for example we failed
          // to check for something, or something changed between the
          // checking and the opening, then the behaviour is
undefined!! say that the file system might have changed in the meantime. :)

Also, Seungbeom's argument is equally applicable in the context of

Socket s;
Foo f; // A Foo is massively complex data structure containing member
lists, maps, etc.

s >> f;

What now? Should f refuse to construct itself from the data coming out
of s until it has verified such data is "safe"?

Even if the answer were "yes", what would the code look like?

-Le Chaud Lapin-

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