How-to articles, tricks, and solutions about CONSTANTS

In Python, a constant is typically defined as a variable that is assigned a value that should not be modified later on in the program.

In PHP, you can include a constant in a string without concatenating it by using double quotes (") instead of single quotes (') to define the string.

The PHP error "Notice: Use of undefined constant" means that you are trying to use a constant that has not been defined yet.

In Java, constants are usually implemented using the final keyword. The final keyword can be used to declare a variable, a method, or a class as final. A final variable is a variable that cannot be modified after it is initialized, a final method is a met