Class Declaration
| class | protocol | namespace | |
|---|---|---|---|
| ABAP Objects | class name definition «inheriting from parentclass». «interfaces: interfaces.» method_and_field_declarations endclass. class name implementation. method_implementations endclass. |
interface name. members endinterface. | |
| C++ (STL) | class name« : public parentclasses» { members }; | namespace name { members } | |
| C# | class name« : «parentclass»«, interfaces»» { members } | interface name« : parentinterfaces» { members } | |
| D | module name; members |
||
| Java | class name« extends parentclass»« implements interfaces» { members } | interface name« extends parentinterfaces» { members } | package name; members |
| PHP | namespace name; members | ||
| Objective-C | @interface name« : parentclass»«< protocols >» { instance_fields } method_and_property_declarations @end @implementation name method_implementations @end |
@protocol name«< parentprotocols >» members @end | |
| Python | class name«(parentclasses)»: Tab ↹ members |
__all__ = | |
| Visual Basic .NET | Class name« Inherits parentclass»« Implements interfaces» members End Class |
Interface name« Inherits parentinterfaces» members End Interface |
Namespace name members End Namespace |
| Eiffel | class name« inherit parentclasses» members end |
||
| Perl | package name; «@ISA = qw(parentclasses);» members 1; | package name; members | |
| Perl 6 | class name «is parentclass «is parentclass ...»» «does role «does role ...»» { members } | role name «does role «does role ...»» { members } | module name { members } |
| Ruby | class name« < parentclass» members end |
module name members end |
|
| Windows PowerShell | |||
| OCaml | class name «parameters» = object «(self)» «inherit parentclass «parameters» «inherit parentclass «parameters» ...»» members end | module name members |
|
| F# | type name«(parameters)» «as this» = class «inherit parentclass«(parameters)» «as base»» members «interface interface with implementation «interface interface with implementation ...»» end | type name = interface members end | namespace name members |
| Smalltalk | "The class is an Object. Just send a message to the superclass (st-80) or the destination namespace (Visualworks)" |
"The namespace is an Object. Just send a message to the parent namespace" |
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Read more about this topic: Comparison Of Programming Languages (object-oriented Programming)
Famous quotes containing the words class and/or declaration:
“One of the strengths I derive from my class background is that I am accustomed to contempt.”
—Dorothy Allison (b. 1949)
“Let us stun and astonish the intruding rabble of men and books and institutions by a simple declaration of the divine fact. Bid the invaders take the shoes from off their feet, for God is here within.”
—Ralph Waldo Emerson (1803–1882)