In ASP, Request object has five collections: QueryString, Form, Cookies, ClientCertificate, and ServerVariables. When you want to access information in one of these collections, you have the choice of writing
It’s very easy to create cross-tab queries in SQL. In the SELECT statement of a query, most databases allow you to use an expression with an aggregate function, not only
You can pack the XML Parser along with the Java Application you are shipping. The following steps show how to do this. I used the Apache’s Xerces and Xalan parsers
Certain compiler and code analyzers can detect a missing enumerator in a switch statement. Consider: enum Seasons{ Winter, Spring, Summer, Fall};switch (s){case Winter: wearCoat(); break;case Spring: pruneGarden(); break;case Summer: goSwimming();
The following trick isn’t portable. Furthermore, even implementations that currently support it do not guarantee to support it in their future releases. Still, it can teach you a few things
If you need to concatenate variables of different types to form a string, use a stringstream object. The header contains the declarations of the stringstream family of classes. Using its
There are two methods of reading a string from the standard input. The first one uses getline(), as in the following example: std::string name;getline(cin, name); // option #1 The second
C++ defines three floating points datatypes: float, double and long double. Some existing implementations support only two (and in some cases only one) of these three. On such implementations, double
The function std::set_new_handler() installs a function to be called when the global operator new or the global operator new[] fail. By default, operator new throws an exception of type std::bad_alloc