, , , .
, , , Delphi, C++ Java. :
( TVehicle);
. Delphi overload, , override reintroduce .
type TVehicle = class constructor Create; virtual; end; TAutomobile = class (TVehicle) constructor Create; override; end; TMotorcycle = class (TVehicle) constructor Create; override; end; TMoped = class (TMotorcycle) // - Create constructor Create(x: integer); reintroduce; end;. , TVehicle.
type CVehicle = class of TVehicle;, TVehicle.
var cv: CVehicle; v: TVehicle; cv:= TAutomobile;v:= cv.Create;,
cv:= TMoped;v:= cv.Create;reintroduce , TMotorcycle.Create ( , , !)
. ( )
]
[]++
. , .
class ClassWithConstructor { public: /* */ ClassWithConstructor(float parameter): object(parameter) {} /* AnotherClass(float); */ private: AnotherClass object;};]Python
Python __init__. , self.
]
class ClassWithConstructor: def __init__(self): """This method is constructor.""" pass]Delphi
Delphi, C++, constructor. , Create.
]
TClassWithConstructor = class public constructor Create; end;]Java
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Java:
;
( new);
synchronized, final, abstract, native static ;
.
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public class Example { // public Example() { this (1); } // public Example(int input) { data = input; } private int data;} // , Example e = new Example(42);]JavaScript
JavaScript , new. this.
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function Example(initValue) { this. myValue = initValue;} Example.prototype.getMyValue = function () { return this. myValue; } // , var exampleObject = new Example(120);]Visual Basic.NET
Visual Basic.NET New.
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Class Foobar Private strData As String ' Constructor Public Sub New(ByVal someParam As String) strData = someParam End SubEnd Class ' ' Dim foo As New Foobar(".NET")[]C#
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class myClass{ private int mA; private string mB; public myClass(int a, string b) { mA = a; mB = b; }} // , myClass c = new myClass(42, "string");]
, , . - - . :
( [ 1]).
( );
;
( ) ;
( , ) ( ) ;
, [ 2].
[ 3], x: T, create x.make :
T[ 4];
make ;
x.
]
POINT. make feature.
create , . default_create, , ANY, make POINT.
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, POINT, my_point_1 my_point_2 POINT.
my_point_1 (0.0; 0.0). , default_create, ANY. create my_point_1.default_create. , ( create).
my_point_2, my_point_2.
make - , my_point_2, .
my_point_1: POINT my_point_2: POINT... create my_point_1 create my_point_2.make (3.0, 4.0) my_point_2.make (5.0, 8.0)...]ColdFusion
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, ColdFusion -. ColdFusion 'init', .
< cfcomponent displayname="Cheese"> <!--- ---> < cfset variables.cheeseName = "" /> <!--- ---> < cffunction name="init" returntype="Cheese"> < cfargument name="cheeseName" type="string" required="true" /> < cfset variables.cheeseName = arguments.cheeseName /> < cfreturn this /> </ cffunction ></ cfcomponent >]PHP
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PHP ( 5) __construct(), new . , , . , , new, .
class Person{ private $name; function __construct($name) { $this->name = $name; } function getName() { return $this->name; }}, PHP 4 ( ) .
class Person{ private $name; function Person($name) { $this->name = $name; } function getName() { return $this->name; }}[] ( )
. ( ) , , - . . ( , ) . :
class Student { // //... ...}, Student () . () . , , , ( ) . ( ). ,
class Student { Student (String studentName, String Address, int ID) { //... ... } //...}
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