Re: help with global variable!
On Sat, 29 Apr 2006 02:33:01 -0700, g wrote:
becouse I want connections to be dynamic,at runtime the user will
choose the number,
actually in main() when the program starts.
It would probably be best to pass connections in to the DBConnection
constructor, then you can ensure that the DBConnection class doesn't get
created before you have specified the number of connections. But if
you can't do that, a static member might work:
/* DBConnection.h */
static int connections;
static void set_connections(int n);
/* DBConnection.cpp */
/* Set this to some sensible default */
int DBConnection::connections = 4;
static void DBConnection::set_connections(int n)
connections = n;
Another way to design this (although this might be too big a change for
you to make easily at this point), would be to use a pool rather than a
singleton, so that each DBConnection is responsible for one connection,
and the pool creates as many DBConnections as you need.
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