• Pavel Minayev (2/2) Mar 13 2002 Why doesn't D allow throw statement without arguments? In C++ it rethrow...
• Walter (3/5) Mar 12 2002 I just didn't think that added much of anything.
• Pavel Minayev (13/14) Mar 13 2002 Why? A very convenient feature. Besides, it allows to omit argument name
• Russ Lewis (16/30) Mar 13 2002 It's also useful for reporting errors of unrecognized exceptions:
• Walter (8/36) Mar 13 2002 Just use:
• Pavel Minayev (5/11) Mar 13 2002 Yes, I remember that only objects can be thrown in D.

"Pavel Minayev" <evilone omen.ru> writes:

Why doesn't D allow throw statement without arguments? In C++ it rethrows
the exception being processed, what's bad in it?

"Walter" <walter digitalmars.com> writes:

"Pavel Minayev" <evilone omen.ru> wrote in message
news:a6mlkb$1ada$1 digitaldaemon.com...
 Why doesn't D allow throw statement without arguments? In C++ it rethrows
 the exception being processed, what's bad in it?

I just didn't think that added much of anything.

"Pavel Minayev" <evilone omen.ru> writes:

"Walter" <walter digitalmars.com> wrote in message
news:a6n1po$1fp3$1 digitaldaemon.com...

 I just didn't think that added much of anything.

Why? A very convenient feature. Besides, it allows to omit argument name
in catch blocks:

    try
    {
        ...
    }
    catch (OutOfMemory)
    {
        // do something useful here
        throw;
    }

Russ Lewis <spamhole-2001-07-16 deming-os.org> writes:

Pavel Minayev wrote:

 "Walter" <walter digitalmars.com> wrote in message
 news:a6n1po$1fp3$1 digitaldaemon.com...

 I just didn't think that added much of anything.

 Why? A very convenient feature. Besides, it allows to omit argument name
 in catch blocks:

     try
     {
         ...
     }
     catch (OutOfMemory)
     {
         // do something useful here
         throw;
     }

It's also useful for reporting errors of unrecognized exceptions:

try
{
    ...
}
catch(...)
{
    printf("error in myfunc(): ");
    throw;
};

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"Walter" <walter digitalmars.com> writes:

"Russ Lewis" <spamhole-2001-07-16 deming-os.org> wrote in message
news:3C8F83A7.6B5C1214 deming-os.org...
 Pavel Minayev wrote:

 "Walter" <walter digitalmars.com> wrote in message
 news:a6n1po$1fp3$1 digitaldaemon.com...

 I just didn't think that added much of anything.

 Why? A very convenient feature. Besides, it allows to omit argument name
 in catch blocks:

     try
     {
         ...
     }
     catch (OutOfMemory)
     {
         // do something useful here
         throw;
     }

 It's also useful for reporting errors of unrecognized exceptions:

 try
 {
     ...
 }
 catch(...)
 {
     printf("error in myfunc(): ");
     throw;
 };

Just use:
    catch(Object o)
    {
        ...
        throw o;
    }

"Pavel Minayev" <evilone omen.ru> writes:

"Walter" <walter digitalmars.com> wrote in message
news:a6o83v$208d$1 digitaldaemon.com...

 Just use:
     catch(Object o)
     {
         ...
         throw o;
     }

Yes, I remember that only objects can be thrown in D.
Yet, "throw;" seems to be a convenient feature to me. Something that can
be accomplished by other means, but just makes your life a bit easier.