Re: throw / catch question

From:

"Jim Langston" <tazmaster@rocketmail.com>

Newsgroups:

comp.lang.c++.moderated

Date:

Thu, 4 Oct 2007 15:45:29 CST

Message-ID:

<AFaNi.16$NF6.12@newsfe06.lga>

"DJ" <dj@dj.net> wrote in message news:fe2ovm$1r3h$1@opal.icpnet.pl...

Hi,

I've been wondering about such code :

string sql("create database TEST");
try
{
SQL_COMMAND->exec(sql);
}
catch (CreateDBException &e)
{
//database TEST already exists
}

In my case first time program is run db is created and no exception
thrown. Then exception is being thrown for ever .... So it's kind of
upside down, exception report that everything is OK.

Is that approach source of evil ?

I would rather run some sql query to see if the db already exists first, if
it doesn't exist then create it. But your method will work too. IMO
exceptions should only be used when there is an actual exception, an error.
They can be used like this, however. I don't know if it is considered evil
or not though, just a programming technique I guess.

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