PHP Programming Language - OpenLibra

SWiZ 283
SWiZ
SWiZ (simple visualisation classes) is open source web application framework for PHP.
SWiZ is rapid prototyping fr and follows the model-view-controller (MVC) paradigm. Common aspects in SWiZ are
modular and overridable.
External links
• SWiZ Homepage [1]
References
[1] http:/ / www. swiz. cz
Scope resolution operator
In computer programming, scope is an enclosing context where values and expressions are associated. The scope
resolution operator helps to identify and specify the context to which an identifier refers. The specific uses vary
across different programming languages with the notions of scoping.
Ruby
Ruby has several different scoping operators:
• global variable identifiers begin with a '$' character (e.g. "$shared_throughout_the_runtime")
• class variable identifiers begin with two '@' characters (e.g. @@all_objects_of_this_type_share_this)
• instance variable identifiers begin with a single '@' character (e.g. @just_for_the_owning_object)
• local variables begin with anything other than these special characters
C++
The scope resolution operator (::) in C++ is used to define the already declared member functions (in the header
file with the .hpp or the .h extension) of the class. In the .cpp file one can define the normal functions or the member
functions of the class. To differentiate from the normal functions with the member functions of the class, one needs
to use the scope resolution operator (::) in between the class name and the member function name i.e. ship::foo()
where the ship is the class and the foo() is the member function in the ship. The other uses of the resolution operator
is to resolve the scope of the variables if the same variable name is used for the global, local, and the data member of
the class. If the resolution operator is placed between the class name and the data member belonging to the class then
the data name belonging to the particular class is affected. If the resolution operator is placed in front of the variable
name then the global variable is affected. If no resolution operator is placed then the local variable is affected.
Example
#include
using namespace std;
int n = 12; // A global variable