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Automatic generated special function called to create an object
default constructor can refer to a constructor that is automatically generated by the compiler in the absence of any programmer-defined constructors (e
Default_constructor
Special function called to create an object
instantiable class, Java compiler inserts a default constructor into the code. This constructor is known as default constructor. It would not be found in source
Constructor (object-oriented programming)
Constructor_(object-oriented_programming)
Capability of some programming languages
length. Another reason for constructor overloading can be to enforce mandatory data members. In this case the default constructor is declared private or protected
Function_overloading
Type of data structure
above constructor, a "Hello!" will be printed when the default Person constructor is invoked. Default constructors are called when constructors are not
C++_classes
2011 edition of the C++ programming language standard
trivial default constructor. This may use the default constructor syntax (SomeConstructor() = default;). Has trivial copy and move constructors, which
C++11
closed city streets. The World Constructors' Championship is presented by the FIA to the most successful F1 constructor over the course of the season through
List of Formula One World Constructors' Champions
List_of_Formula_One_World_Constructors'_Champions
In programming, an object-creating function that takes no arguments
constructor or default constructor. In object-oriented programming, a constructor is code that is run when an object is created. Default constructors of objects
Nullary_constructor
Constructor that copies the state of another object
having default values). Normally the compiler automatically creates a copy constructor for each class (known as an implicit copy constructor) but for
Copy_constructor_(C++)
Operator (=) used for assigning values in C++
by default constructor MyArray second(first); // initialization by copy constructor MyArray third = first; // Also initialization by copy constructor second
Assignment_operator_(C++)
Potentially compiler-generated class methods in C++
member functions are: Default constructor if no other constructor is explicitly declared. Copy constructor if no move constructor and move assignment operator
Special_member_functions
Set of rules defining correctly structured programs for the C# programming language
implicit default constructor that takes no arguments, it cannot be redefined for structs. Explicitly defining a differently-parametrized constructor overrides
C_Sharp_syntax
C++ programming keywords for dynamic memory allocation
which a T pointer can be assigned, such as a superclass of T). The default constructor for T, if any, is called to construct a T instance in the allocated
New_and_delete_(C++)
Python GUI library
user interface objects in PyQt. # We provide the default constructor for QWidget. The default constructor has no parent. # A widget with no parent is called
PyQt
Rules defining correctly structured Java programs
a class X, a constructor is X(...); in particular, a default constructor has no parameters, X(). class Foo { String str; // Constructor with no arguments
Java_syntax
always come with an implicit default constructor that essentially fills the struct memory space with zeroes. Further constructors can be defined only with
Comparison of C Sharp and Java
Comparison_of_C_Sharp_and_Java
Assignment of an initial value for variable
type, while static objects of class type are initialized with their default constructors. Object lifetime Finalizer Process & related Finalization Pattern
Initialization_(programming)
Style of computer programming
type-indexed values for a specific constructor using constructor cases, and reuse one generic definition in another using default cases. The resulting type-indexed
Generic_programming
Mechanism for supporting dynamic dispatch
method table. There are exceptions for special cases as posed by the default constructor. Also note the virtual destructors in the base classes, Base1 and
Virtual_method_table
C/C++ specifier referring to constant expression
"constexpr virtual inheritance". open-std.org. WG21. cppreference.com. "Default constructors". cppreference.com. cppreference.com. Retrieved 14 April 2026. cppreference
Constexpr
as the name for the class (the template itself), the name for the default constructor of the class (a subroutine that creates objects), and as the type
Glossary_of_computer_science
Set of methods that extend the functionality of a class
$_instance = null; private function __construct() {} // Must have private default constructor and be aware not to open it in the class public static function getInstance()
Trait_(computer_programming)
Comparison between two programming languages
March 2014. "The Java Tutorials: Passing Information to a Method or a Constructor". Oracle. Retrieved 17 February 2013. Bloch 2018, pp. 123–125, Chapter
Comparison_of_Java_and_C++
General-purpose programming language
accessor methods.) Alternative constructors can also be declared, as in Java. Code that would go into the default constructor (other than initializing the
Scala_(programming_language)
Computing technology developer by Sun Microsystems
required conventions are as follows: The class must have a public default constructor (with no arguments). This allows easy instantiation within editing
JavaBeans
General-purpose, object-oriented programming language
classes cannot have instance variables of C++ classes that lack a default constructor or that have one or more virtual methods,[citation needed] but pointers
Objective-C
Java method for object duplication
incompatible with final fields. Because clone() is essentially a default constructor (one that has no arguments) it is impossible to assign a final field
Clone_(Java_method)
Rules of thumb in C++
compiler with the following default semantics: Destructor – call the destructors of all the object's class-type members Copy constructor – construct all the object's
Rule of three (C++ programming)
Rule_of_three_(C++_programming)
Composition Constructor Container Contravariance Copy constructor Coupling Covariance Data-driven design Data hiding Default constructor Deep copy Delegation
Index of object-oriented programming articles
Index_of_object-oriented_programming_articles
Point in a computer program where instruction-execution begins
java.lang.Object and does not implement any interfaces, has only a default constructor, and has the fields and methods declared in the compact source file
Entry_point
Software programming technique
instantiates the dependencies declared by the application object (often in the constructor method's parameters), and passes the dependencies into the object. Dependency
Dependency_injection
Design pattern in object-oriented software development
std; class Singleton { private: Singleton() = default; // no public constructor ~Singleton() = default; // no public destructor inline static Singleton*
Singleton_pattern
the default constructor is used. Any Eiffel procedure can be used as a creation procedure, aka constructors. See Eiffel paragraph at Constructor (computer
Comparison of programming languages (object-oriented programming)
Comparison_of_programming_languages_(object-oriented_programming)
In software, to have several parent classes
Shared classes must define a secondary constructor for each regular constructor in the class. The regular constructor is called the first time the state for
Multiple_inheritance
homeClazz = corepatterns.apps.psa.ejb.ResourceSessionHome.class; // Default Constructor. Looks up home and connects // to session by creating a new one public
Business_delegate_pattern
Class templates in the C++ programming language
demonstrates that the operator [] inserts new objects (using the default constructor) in the map if there is not one associated with the key. So integral
Associative_containers_(C++)
Opaque data type which stores a memory address
pointer public: MyClass(); // Constructor MyClass(const MyClass&); // Copy constructor MyClass(MyClass&&); // Move constructor MyClass& operator=(const MyClass&);
Opaque_pointer
Motorsport championship held worldwide
two annual World Championships: one for the drivers, and one for the constructors—now synonymous with teams. Each driver must hold a valid Super Licence
Formula_One
Object-oriented software design pattern
without having to specify their exact classes. Rather than by calling a constructor, this is accomplished by invoking a factory method to create an object
Factory_method_pattern
Set of rules defining correctly structured programs
$_instance = null; private function __construct() {} // Must have private default constructor and be aware not to open it in the class public static function getInstance()
PHP_syntax_and_semantics
float second;, plus three constructor functions. The first (default) constructor initializes both members with the default values 0 and 0.0, whereas the
Utility_(C++)
Technique in the C++ language
= ""): A("instance of D from constructor A"), B("instance of D from constructor B"), C("instance of D from constructor C") {} void pureVirtualTest()
Virtual_inheritance
Set of rules defining correctly structured programs
constructor or an object literal. The constructor can use either a built-in Object function or a custom function. It is a convention that constructor
JavaScript_syntax
Technique in object-oriented programming
related to copy-on-write. In C++, a lazy copy occurs by default when invoking the copy constructor. The following presents examples for one of the most widely
Object_copying
C++ syntax for specifying placement of objects in memory
the constructor cannot be called on an object, however, it must access (and initialize) non-static members. This makes calling the constructor directly
Placement_syntax
Syntactic metadata for Java source code
String[] changedBy() default ""; String[] lastChangedBy() default ""; Priority priority() default Priority.MEDIUM; String createdBy() default "James Gosling";
Java_annotation
Creational design pattern in software development
specifies a pure virtual clone() method. Any class that needs a "polymorphic constructor" capability derives itself from the abstract base class, and implements
Prototype_pattern
Function that is tied to a particular instance or class
paradigms such as abstract data types and structured programming. A constructor is a method that is called at the beginning of an object's lifetime to
Method_(computer_programming)
Java-based GUI toolkit
bar and a close control. The Hello() constructor initializes the frame by first calling the superclass constructor, passing the parameter "Hello World"
Swing_(Java)
Computing software platform
classes have constructors that support specifying the character encoding to use. If no encoding is specified, the program uses the default encoding for
Java Platform, Standard Edition
Java_Platform,_Standard_Edition
Object that creates other objects
the collections.defaultdict class has a constructor which creates an object of type defaultdict whose default values are produced by invoking a factory
Factory (object-oriented programming)
Factory_(object-oriented_programming)
Java JSON serialization library
modified to be serialized or deserialized. By default, a class only needs a defined default (no-args) constructor; however, this requirement can be circumvented
Gson
Type of types in a type system
a kind is the type of a type constructor or, less commonly, the type of a higher-order type operator (type constructor). A kind system is essentially
Kind_(type_theory)
C++ compiler optimization eliminating unnecessary copying of objects
in semantics; copy-initialization still requires an accessible copy constructor. The optimization can not be applied to a temporary object that has been
Copy_elision
List of versions of the Java programming language
(Third Preview) JEP 481: Scoped Values (Third Preview) JEP 482: Flexible Constructor Bodies (Second Preview) The String Templates preview feature was removed
Java_version_history
2023 edition of the C++ programming language standard
std::reference_wrapper yielding reference types adding default arguments for std::pair's forwarding constructor constexpr support for: std::type_info::operator==
C++23
BASIC dialect
Declare Constructor (nX As Integer = 0, nY As Integer = 0) Declare Property getX As Integer Declare Property getY As Integer End Type Constructor Vector
FreeBASIC
2020 edition of the C++ programming language standard
views, P1391R4: Range constructor for std::string_view (constructor from iterator-pair of characters), P1394R4: Range constructor for std::span<ref>, P1870R1:
C++20
Object whose state cannot be modified after it is created
Moo; has value => ( is => 'ro', # read only default => 'data', # can be overridden by supplying the constructor with # a value: Immutable->new(value => 'something
Immutable_object
Inheritable and overridable function or method for which dynamic dispatch is facilitated
fields are not yet initialized by the derived constructor (although they are initialized to their default zero values). Some design patterns, such as the
Virtual_function
Software design pattern
Counter<Y> { // ... }; Each time an object of class X is created, the constructor of Counter<X> is called, incrementing both the created and alive count
Curiously recurring template pattern
Curiously_recurring_template_pattern
Lightweight programming language
library with a C API. Lua 1.0 was designed in such a way that its object constructors, being then slightly different from the current light and flexible style
Lua
the sub classes. The abstract keyword cannot be used with variables or constructors. Note that an abstract class isn't required to have an abstract method
List_of_Java_keywords
General-purpose programming language
explicit default (parameterless) constructor because they already have an implicit one which initializes all contained data to the type-dependent default value
C Sharp (programming language)
C_Sharp_(programming_language)
Former Indian Formula One racing team
India and later Sahara Force India, was a Formula One racing team and constructor based in Silverstone, United Kingdom, with an Indian licence. The team
Force_India
Design pattern in software development
fixed DI which typically supplies an object with its dependencies via a constructor parameter passing, the service location call can be made in a business
Service_locator_pattern
Variable that represents an argument to a function
call by reference style behavior. "Passing Information to a Method or a Constructor (Learning the Java Language > Classes and Objects)". The Java™ Tutorials
Parameter (computer programming)
Parameter_(computer_programming)
High-level programming language
similarly to Java. class Person { constructor(name) { this.name = name; } } class Student extends Person { constructor(name, id) { super(name); this.id
JavaScript
Type of programming paradigm in computer science
#ifndef GRADE_H #define GRADE_H class GRADE { public: // This is the constructor operation. // ---------------------------------- GRADE ( const char letter
Imperative_programming
Lifetime of a computer software object
contexts. In some class-based languages, a constructor handles initialization. Like other methods, a constructor can be overloaded in order to support creating
Object_lifetime
Unchanging property for all objects of a class
assertions by default, which can be used to define class invariants. A common pattern to implement invariants in classes is for the constructor of the class
Class_invariant
Class in object-oriented programming languages
string): this; } class Halfling { firstName: string; lastName: string; constructor(first: string, last: string) { this.firstName = first; this.lastName
Mixin
this pattern is with the new constructor feature in Ceylon 1.2 where the objects are implemented as different named constructor declarations. // Traditional
Ceylon_(programming_language)
Daily American-style crossword puzzle
The New York Times Games. The puzzle is created by various freelance constructors and has been edited by Will Shortz since 1993. The crosswords are designed
The_New_York_Times_crossword
Design pattern in functional programming to build generic types
failure, non-determinism, or side effect. More formally, a monad is a type constructor M equipped with two operations, return : <A>(a : A) -> M(A) which lifts
Monad (functional programming)
Monad_(functional_programming)
Local variable in computer programming
subcomponents, the compiler is free to ignore the hint. In C++, the constructor of automatic variables is called when the execution reaches the place
Automatic_variable
Ability of a process to examine and modify itself
GetTypeInfo(Foo) Dim constructors() As Introspection.ConstructorInfo = classInfo.GetConstructors Dim fooInstance As Foo = constructors(0).Invoke Dim methods()
Reflective_programming
Computer network protocol
browser to ship full support for the standard, with WebSocket enabled by default. Development of the WebSocket protocol was subsequently moved from the
WebSocket
Python binding to the Tk GUI toolkit
line 7: Defines the function that sets up the Frame. line 8: Calls the constructor for the parent class, Frame. line 12: Defining the widgets. line 13:
Tkinter
72nd Formula One season
FIA Formula One World Championship Drivers' Champion: Max Verstappen Constructors' Champion: Mercedes Previous 2020 Next 2022 Races by country Races by
2021 Formula One World Championship
2021_Formula_One_World_Championship
Programming language
permits default parameters. In Pascal, if the destination file is a text file, the parameters to write/writeLn have an implementation-defined default total
Comparison of Pascal and Delphi
Comparison_of_Pascal_and_Delphi
init ;class constructor call echo("init c_pat class section") DECLARE _::pvar1 = vc WITH CONSTANT("pvar1 test") ;class instance member (default if namespace
Cerner_CCL
class constructor. Virtualization: Contextualization permits, at the end of VM instantiation, to set or override VM data having unknown or default values
Contextualization (computer science)
Contextualization_(computer_science)
SQL statement
example, MySQL allows omitting the DEFAULT keyword, and T-SQL can use DEFAULT VALUES instead of VALUES(DEFAULT). The DEFAULT keyword can also be used in normal
Insert_(SQL)
Software design pattern
} } export class AndSpecification extends CompositeSpecification { constructor(private leftCondition: ISpecification, private rightCondition: ISpecification)
Specification_pattern
Object that represents a simple entity whose equality is not based on identity
the fields (that will be evaluated once by the initializer list of the constructor) and on the methods of the class. However, if the fields themselves are
Value_object
Functional programming language
along with the generalisation of type classes to higher kinds (type constructors). Along with "do notation", which provides syntactic sugar for the Monad
Haskell
Calling conventions used in x86 architecture programming
requiring special treatment by the exception handler (e.g., a defined constructor, destructor, or assignment) are returned in memory. To pass "in memory"
X86_calling_conventions
Programming language
variables. final num x, y; // A constructor, with syntactic sugar for setting instance variables. // The constructor has two mandatory parameters. Point(this
Dart_(programming_language)
File implementing the methods of a class
ExampleClass { private: std::string name; public: ExampleClass(); // Constructor. void addSomething(int k); }; } An example of the structure of ExampleClass
Class_implementation_file
Document-oriented XML representation of source code
param, parameter_list, return, specifier Class class, class_decl, constructor, constructor_decl, destructor, destructor_decl, friend, member_list, private
SrcML
Software design pattern
finished performing the initialization. For example, in Java if a call to a constructor has been inlined then the shared variable may immediately be updated
Double-checked_locking
Association of Fire Fighters Local 610 International Union of Elevator Constructors Local 28 Teamsters Local 90 United Food and Commercial Workers Local
2026 United States Senate election in Iowa
2026_United_States_Senate_election_in_Iowa
48th season of FIA Formula One motor racing
Formula One World Championship Drivers' Champion: Michael Schumacher Constructors' Champion: Williams-Renault Previous 1993 Next 1995 Races by country
1994 Formula One World Championship
1994_Formula_One_World_Championship
Group of standard library class templates
elements are moved backwards in terms of their assignment operator or copy constructor. Consequently, references and iterators to elements after the insertion
Sequence_container_(C++)
Function called at the end of an object's lifetime
are associated, but with a tilde prefix (for example, a class X with a constructor X() has a destructor ~X()). C#: same syntax as C++ (~X()). Historically
Destructor (computer programming)
Destructor_(computer_programming)
Desktop application for working with geographic data
(expressions, unique values), multiple attributes, save/load legend, symbology constructor, symbology levels, symbology libraries. Raster representation: brightness
GvSIG
Python object-relational mapping library
objects in Django integration layer. Add a new JSON property, new ROW constructor, new Cast expressions, and two new tracers. New storm.twisted.transact
Storm_(software)
Software optimization technique
strictness analysis will force strict evaluation. In Haskell, marking constructor fields strict means that their values will always be demanded immediately
Lazy_evaluation
Delay of a task until it is first needed
+ counter); } return result; } public LazyFactoryObject() { // empty constructor } public LazyObject GetLazyFactoryObject(LazyObjectSize size) { // yes
Lazy_initialization
Tallest building in Hong Kong
China State Construction Engineering Corporation and Sanfield building constructor limited, a construction subsidiary of Sun Hung Kai Properties Limited
International_Commerce_Centre
DEFAULT CONSTRUCTOR
DEFAULT CONSTRUCTOR
Boy/Male
Hindu, Indian
Without Fault
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sanskrit, Telugu
Name of Lord Vishnu; Sinless; Pure; Perfect; Energy; Without Any Fault
Boy/Male
Indian
A critic, A reviewer, Fault finder
Surname or Lastname
South German
South German : occupational name for an official in charge of the legal auction of property confiscated in default of a fine; such a sale was known in Middle High German as a gant (from Italian incanto, a derivative of Late Latin inquantare ‘to auction’, from the phrase In quantum? ‘To how much (is the price raised)?’).German : metonymic occupational name for a cooper, from Middle High German ganter, kanter ‘barrel rack’.German : variant of Gander 3.English : occupational name for a glover, from Old French gantier, an agent derivative of gant ‘glove’ (see Gant).
Surname or Lastname
English
English : perhaps a shortened form of Upholder, an occupational name for someone who dealt in secondhand clothes and other articles, Middle English upoldere.
Girl/Female
Hindu, Indian
Beyond Fault
Boy/Male
Indian
A critic, A reviewer, Fault finder
Boy/Male
Arabic, Muslim
A Critic; A Reviewer; A Fault-finder
Surname or Lastname
English (Kent)
English (Kent) : of uncertain origin. Reaney suggests that it may be a metonymic occupational name for a fish seller or a baker, from Middle English fagge, Old English facg, which denoted a kind of flatfish, and perhaps also a flat loaf. Another Middle English word fagge apparently denoted a fault in the weave of a piece of cloth.
Boy/Male
Muslim
A critic, A reviewer, Fault finder
Girl/Female
Indian
Sinless, Without any fault, Beauty
Boy/Male
Muslim/Islamic
Fault-finder
Boy/Male
Arabic, Muslim, Sindhi
Fault-finder; Critic; Reviewer
Boy/Male
African, American, Arabic, Australian, British, Chinese, Danish, English, French, German
Person with No Fault; No Mistake in his Character; Pure Thoughts; Praiseworthy; Glorified; Variant Used for Mohammad; Founder of Islamic Religion
Boy/Male
British, English, German, Latin
Form of Reginald; Counsel Power
Surname or Lastname
English and Catalan
English and Catalan : occupational name for a trader, from Old French mercier, Late Latin mercarius (an agent derivative of merx, genitive mercis, ‘merchandise’). In Middle English the term was applied particularly to someone who dealt in textiles, especially the more costly and luxurious fabrics such as silks, satin, and velvet.
Boy/Male
Muslim
A critic, A reviewer, Fault finder
Surname or Lastname
English (chiefly East Anglia)
English (chiefly East Anglia) : from Anglo-Norman French cachepol (a compound of cache(r) ‘to chase’ + pol ‘fowl’), an occupational name for a bailiff, originally one empowered to seize poultry and other livestock in case of default on debts or taxes.
Boy/Male
Arabic
Person with No Fault; No Mistake in his Character; Pure Thoughts; Praiseworthy; Glorified
Girl/Female
Tamil
Sinless, Without any fault, Beauty
DEFAULT CONSTRUCTOR
DEFAULT CONSTRUCTOR
Girl/Female
Muslim/Islamic
Cheerful
Girl/Female
Hindu
Red haired
Girl/Female
Hindu, Indian
River Godavari
Girl/Female
Assamese, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Tamil, Telugu
Grace
Girl/Female
Arabic, Muslim
Faithful and Devoted
Girl/Female
Indian, Sanskrit
Good Servant
Boy/Male
Muslim
Servant of the Most Compassionate.
Girl/Female
Spanish
Little lily.
Girl/Female
Tamil
Life, Immortal
Girl/Female
Muslim
DEFAULT CONSTRUCTOR
DEFAULT CONSTRUCTOR
DEFAULT CONSTRUCTOR
DEFAULT CONSTRUCTOR
DEFAULT CONSTRUCTOR
n.
A failing or failure; omission of that which ought to be done; neglect to do what duty or law requires; as, this evil has happened through the governor's default.
n.
A defaulter or embezzler.
v. i.
To fail to appear in court; to let a case go by default.
n.
One who fails to perform a duty; a delinquent; particularly, one who fails to account for public money intrusted to his care; a peculator; a defalcator.
n.
In coal seams, coal rendered worthless by impurities in the seam; as, slate fault, dirt fault, etc.
p. pr. & vb. n.
of Default
v. t.
To call a defendant or other party whose duty it is to be present in court, and make entry of his default, if he fails to appear; to enter a default against.
n.
Defect; want; lack; default.
n.
One who makes default; one who fails to appear in court when court when called.
v. t.
To fail to perform or pay; to be guilty of neglect of; to omit; as, to default a dividend.
v. i.
To fail in duty; to offend.
v. i.
To fail in fulfilling a contract, agreement, or duty.
v. i.
To err; to blunder, to commit a fault; to do wrong.
n.
Default of apperance, as in court, to prosecute or defend; failure to appear.
n.
A neglect of, or failure to take, some step necessary to secure the benefit of law, as a failure to appear in court at a day assigned, especially of the defendant in a suit when called to make answer; also of jurors, witnesses, etc.
v. t.
To charge with a fault; to accuse; to find fault with; to blame.
v. t.
To leave out of account; to omit.
n.
Fault; offense; ill deed; wrong act; failure in virtue or wisdom.
imp. & p. p.
of Default
n.
The act of finding fault or blaming; -- used derogatively. Also Adj.