Comparison of Programming Languages (object-oriented Programming) - Object Construction and Destruction

Object Construction and Destruction

construction destruction
ABAP Objects data variable type ref to class .
create object variable «exporting parameter = argument».
C++ (STL) class variable«(parameters)»; or
class *variable = new class«(parameters)»;
delete pointer;
C# class variable = new class(parameters); variable.Dispose;
Java variable.dispose;
D delete variable;
Objective-C (Cocoa) class *variable = init]; or
class *variable = initWithFoo:parameter «bar:parameter ...»];
;
Python variable = class(parameters) del variable (Normally not needed)
Visual Basic .NET Dim variable As New class(parameters) variable.Dispose
Eiffel create variable or
create «{TYPE}» variable.make_foo «(parameters)» or
variable := create {TYPE} or
variable := create {TYPE}.make_foo «(parameters)»
PHP $variable = new class(parameters); unset($variable);
Perl 5 «my »$variable = class->new«(parameters)»; undef($variable);
Perl 6 «my »$variable = class.new«(parameters)»; $variable.undefine;
Ruby variable = class.new«(parameters)»
Windows PowerShell $variable = New-Object «-TypeName» class ««-ArgumentList» parameters» Remove-Variable «-Name» variable
OCaml let variable = new class «parameters» or
let variable = object members end
F# let variable = «new »class(«parameters»)
Smalltalk "The class is an Object.
Just send a message to a class, usually #new or #new:, and many others, for example:"
Pointy x: 10 y: 20.
Array with: -1 with: 3 with: 2.
JavaScript var variable = new class«(parameters)» or
var variable = { «key1: value1«, key2: value2 ...»»}
Object Pascal / Delphi ClassVar := ClassType.ConstructorName(parameters); ClassVar.Free;

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Famous quotes containing the words object, construction and/or destruction:

    My object will be, if possible, to form Christian men, for Christian boys I can scarcely hope to make.
    Thomas Arnold (1795–1842)

    Striving toward a goal puts a more pleasing construction on our advance toward death.
    Mason Cooley (b. 1927)

    All other things to their destruction draw,
    Only our love hath no decay;
    This no tomorrow hath, nor yesterday,
    John Donne (1572–1631)