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Topic: Constructor overloading

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	Constructor overloading -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-10)
		In (additional info and facts about object-oriented programming) object-oriented programming it is common to use (additional info and facts about constructor overloading) constructor overloading to allow multiple ways of creating an object.
		Remember, (additional info and facts about method overloading) method overloading is when methods have the same name, but take different arguments.
		In the ((An island in Indonesia south of Borneo; one of the world's most densely populated regions) Java) example below the constructor is overloaded as there are two methods with the same name ("Person").
	www.absoluteastronomy.com /encyclopedia/c/co/constructor_overloading.htm (273 words)

	Constructor overloading - Wikipedia, the free encyclopedia
		In object-oriented programming it is common to use constructor overloading to allow multiple ways of creating an object.
		Remember, method overloading is when methods have the same name, but take different arguments.
		In the (Java) example below the constructor is overloaded as there are two methods with the same name ("Person").
	en.wikipedia.org /wiki/Constructor_overloading (307 words)

	WitScale's SCJP (Java Certification) Study Notes - Method Overloading and Overriding.
		Overloaded methods may have arguments with different types and order of the arguments may be different.
		Overloaded methods are not required to have the same return type or the list of thrown exceptions.
		Overloading is particularly used while implementing several methods that implement similar behavior but for different data types.
	www.witscale.com /scjp_studynotes/chapter6.html (818 words)

	Constructors
		As an alternative to constructor overloading, constructors which take arguments can be provided with default values for those arguments (Actually, any function which takes arguments can have default values for their arguments).
		If no constructor is declared explicitly in the class, the compiler implicitly provides a constructor which (a) takes no arguments, and (b) is empty (does nothing).
		If your class constructor takes arguments, then, rather than provide a separate default constructor that takes no arguments, it is better to provide a constructor with default arguments that can serve either as a default constructor or as a constructor that takes the arguments it specifies.
	cs-people.bu.edu /metcalf/is703/constructors.html (1892 words)

	Constructor and Destructors in C# (Site not responding. Last check: 2007-10-10)
		A constructor with zero arguments (that is no-argument) is known as default constructor.
		The overloaded constructor must differ in their number of arguments and/or type of arguments and/or order of arguments.
		The static constructor of a base class is not inherited to the derived class.
	www.c-sharpcorner.com /Language/ConsNDestructorsInCSRVS.asp (1119 words)

	C++ FAQ By Amarnath Gudlavalleti
		Here the same constructor is used to initialize two objects with different meanings using the named constructor idiom, which would have been impossible without it.
		This is because constructor overloading is achieved by having different arguments to the function.
		Copy constructors are invoked whenever we need a copy of an object like in call-by-value and when returning values from a function.
	www.angelfire.com /scifi/amar/Cplusplusfaq.html (2102 words)

	Constructors In C# (Site not responding. Last check: 2007-10-10)
		C# supports overloading of constructors, that means we can have constructors with different set of parameters.
		// This is the constructor with one parameter.
		Fourthly, Overloading needs the two methods to be different in terms to methods definition, which you cannot do with Static Constructors, so you can have at the most one static constructor in the class.
	www.c-sharpcorner.com /Code/2004/May/ConstructorsInCSharp.asp (992 words)

	Java: OOP Tutorial (Site not responding. Last check: 2007-10-10)
		Here is the Student1 class rewritten with a constructor which does nothing, which is exactly the same as the default constructor which is automatically created for every class.
		A constructor is similar to a method: it is called, it has a body of Java statements, and it returns.
		Constructors and methods in the same class can use the variables, but no one outside the class can see them.
	leepoint.net /notes-java/oop/toot-oop.html (3536 words)

	Thursday, Feb 1 Lab (lab #7)
		A constructor is a method that is used to ensure variables are initialized correctly.
		Constructors have the same name as the Class.
		If a class is created with no constructor declared, java provides a default constructor.
	www2.hawaii.edu /~luim/feb1.htm (517 words)

	wksht10
		C++ allows you to write your own copy constructor and to overload the assignment operator for classes if you need to in order to correct this problem.
		The code for an overloaded assignment operator should contain all of the lines in the copy constructor, but it has a few more things to do because it is operating on an object that has already been instantiated.
		Even if there are no statements in your code which explictly call a copy constructor or a destructor for a class, these are implicitly called whenever an instance of a class is passed by value into a function.
	www.cs.rpi.edu /courses/spring01/cs2/wksht10/wksht10.html (1668 words)

	POLYMORPHISM IN C++ (Site not responding. Last check: 2007-10-10)
		Overloading (the use of the same name for similar methods or operators): A method or operator can be distinguished based on its "___________" (defined as the list of argument types in its parameter list).
		When the constructor is applied, a temporary, unnamed instance is created and then assigned to the instance named on the left-hand side of the assignment statement.
		Overloaded methods are invoked by a type-matching algorithm that includes having the implicit argument matched to an instance of that class type.
	faculty.frostburg.edu /cosc/htracy/COSCC++/PolymC++.htm (3499 words)

	Building an Application: Part I: Application Objects
		Each constructor must have the same name as the class that defines it, but it can have as many constructors as might be necessary.
		The compiler knows which constructor is being called simply by the type of information being provided.
		A constructor can require different types in the parameter list, and you should put them in the order you want them added.
	java.sun.com /developer/onlineTraining/new2java/divelog/part1/page5.jsp (976 words)

	[No title]
		Copy constructor is called to initialize the receiving storage of a temporary variable.
		The way to check this is to compare the address of the object whose assignment operator was called to the address of the object being passed to it.
		In the constructor and assignment operator functions, be careful about performing list operations on the list that is being passed to your functions: Visual C++ gives strange and unhelpful error messages when you do.
	www.iit.edu /~cs401/lectures/Lect-04-05-1999.txt (531 words)

	[No title] (Site not responding. Last check: 2007-10-10)
		Yes, It is mandatory to have the constructor in the class and that too should be accessible for the object i.e., it should have a proper access modifier.
		Say for example we have the private constructor in the class then it is of no use as it cannot be accessed by the object, so practically it is no available for the object.
		If either the no parameter constructor is absent or it is in-accessible (say it is private), it will raise an error.
	www.devhood.com /tutorials/tutorial_details.aspx?tutorial_id=777 (1173 words)

	[No title]
		Whenever a copy of a variable is needed, and the destination variable did not already exist, C++ calls on the copy constructor to correctly initialize the new instance.
		The semantics of call-by-value parameter passing require that a local copy of the argument type be created and initialized from the value of the expression passed as the actual argument.
		Its syntax is that of a normal constructor, but taking one constant reference argument of the same type as the class.
	www.cs.ucdavis.edu /~rogaway/classes/110/spring97/disc/sec1_notes (1082 words)

	DevNetwork Forums :: View topic - Calling Methods in the COnstructor
		An alternative would be to put all that in a function (external to the class definitions) which instantiates a child, runs parent constructor, etc in the required sequence.
		In these languanges there will typically be a "default" no argument constructor that probably only initializes its attributes to default values, with other customized constructors for more specific/common creation tasks.
		PHP, without constructor overloading (which can not be entirely simulated though default arguments), often ends up with simple "default" constructors because there is almost always a need for a simple "new Object()" with get/sets and other "configuration" functions defined later, but its not required.
	forums.devnetwork.net /viewtopic.php?t=9289 (383 words)

	PHP: Constructors and Destructors - Manual
		Classes which have a constructor method call this method on each newly-created object, so it is suitable for any initialization that the object may need before it is used.
		If a constructor is not present in a child class, php5 will try to call a constructor from the parent class.
		It might be convenient for you to have a constructor on that object, but when you're only one of several thousand people that are using it, your convenience isn't generally among the design criteria.
	www.php.net /manual/en/language.oop5.decon.php (1808 words)

	PHPDeveloper.org: PHP News, Views, and Community
		Ilia Alshanetsky has a quick new post on his blog today that talks about the new PDO constructor overloading he just introduced.
		As of few minutes ago PDO extension allows constructor overloading, which is something a lot of people had asked for.
		Keep in mind that if you don't call the original PDO constructor via parent::__construct() an error will be generated, so exercise caution when using this feature.
	www.phpdeveloper.org /news/3898 (2526 words)

	CS219 • Lecture 09: Operator Overloading (Site not responding. Last check: 2007-10-10)
		In C++ a function can be overloaded when there is another function with the same full name.
		The constructor that takes a reference to the same type being constructed (typically a const reference) is called the copy constructor.
		The copy constructor is one of six routines the compiler will write for you if it is needed and you haven't made such a definition impossible.
	it.stlawu.edu /~blad/Teaching/cs219/notes/Lecture09.html (358 words)

	[No title] (Site not responding. Last check: 2007-10-10)
		The copy constructor and overloading the assignment operator
		Now when the destructor for either (1) or (2) is invoked, the dynamically allocated storage is deleted by the destructor, thereby leaving the other object with a dangling pointer(one that points to nothing).
		If an object contains data attributes which are dynamically allocated then it is necessary to provide for overloading the assignment operator to override the default assignment.
	www.ship.edu /~jcthom/schedule/cps255/notes/CopyConstAndAssOvld.html (285 words)

	Class MyClass (Site not responding. Last check: 2007-10-10)
		The constructors for this class allow us to construct an object set to the defaults or to initialize mystring to a given value Note that this class does not contain a main method since it is called by a "driver" which will contain a main method.
		It would be created by java but since I am writing my own unique constructor, java does not create the null constructor.
		Note constructors do not "return" anything and are the same name as the class.
	www.unf.edu /~rzucker/cop3540dir/MyClass.html (264 words)

	Type inference with Constructor subtyping (ResearchIndex) (Site not responding. Last check: 2007-10-10)
		The produced terms can then be taken and typed without constructor overloading and, following Mitchell's subtyping ideas in [2], a most general typing judgment for each of these terms can now be generated.
		We show that this method is a correct and complete way of generating a set of most general typings to a term.
		0.1: Constructor subtyping in the Calculus of Inductive..
	citeseer.ist.psu.edu /665937.html (217 words)

	swfoo.com: Comment on Inheritance in ActionScript 2.0 (Site not responding. Last check: 2007-10-10)
		Also, -afaik- there is no method overloading in AS 2.0 (at least in this release), so there will be no constructor overloading.
		That's right, there is no overloading of the constructor in AS2 because it all compiles down to AS1.
		To simulate constructor overloading, you'd do the same thing as in AS1.
	www.swfoo.com /mt-bin/_msgs_.cgi?entry_id=10 (598 words)

	may16 notes CISC181 05S (Site not responding. Last check: 2007-10-10)
		The way to avoid this pit fall is to use the copy constructor to allocate space on the heap for this new object that is separate from the original object.
		The overloaded = operator allows us to assign objects of the same type to eachother.
		.Since assignment doesn't call the constructor, unless we use the "new" operator, we can't be sure that our new object has been initialized correctly.
	udel.edu /~pconrad/cisc181/05S/lect/notes/9am/05.16/may16notes.html (528 words)

	GotDotNet Message Boards
		I'm trying to overload the default constructor for my webservice.
		It seems like the proxy that is generated by Visual Studio only takes into account the default constructor.
		I was trying to put the authentication code in the constructor instead of making a separate authenticate method.
	www.gotdotnet.com /community/messageboard/Thread.aspx?id=25305 (174 words)

	Class 6 Slides
		Overloaded operator prototypes are defined outside the class, so their definitions must rely on public member functions and constructors to change the values of private data members.
		The book uses another method which gets around this restriction, but it is not one covered in the AP curriculum.
		Your overloaded output operator must return the value of that object.
	dimacs.rutgers.edu /~rkrane/clecs/csony/Class_6_Slides.htm (1063 words)

	A System of Constructor Classes: Overloading and Implicit Higher-Order Polymorphism - Jones (ResearchIndex) (Site not responding. Last check: 2007-10-10)
		Abstract: This paper describes a flexible type system which combines overloading and higher-order polymorphism in an implicitly typed language using a system of constructor classes -- a natural generalization of type classes in Haskell.
		In particular, we show how constructor classes can be used to support the use of monads in a functional language.
		Jones, M.P. A system of constructor classes: overloading and implicit higher-order polymorphism.
	citeseer.ist.psu.edu /jones95system.html (554 words)

	JustLinux Forums - C++ constructor overloading
		Some time later (though perhaps it was right away, I don't know for sure), it was adapted to also allow you to initialize the class's member variables.
		That's where its use in constructors for structs (in C++ anyway) comes from.
		This does the job, but I think doing more constructor overloads and initializing vars is a lot nicer than doing this.
	www.justlinux.com /forum/showthread.php?t=141912 (790 words)

	PHPBuilder.com, the best resource for PHP tutorials, templates, PHP manuals, content management systems, scripts, ...
		I did a PHP site last year and I used the ideas of this article, and had the same problem on overloading methods of classes...
		Today I have to continue the site (http://www.classia.com.br) with the same principles of OOP using PHP and was searching for a solution for it...
		All you have to do is to pass the func_get_args() value to a new variable and get the values using the array sintaxe...
	www.phpbuilder.com /annotate/message.php3?id=1007770&print_mode=1 (290 words)

	A system of constructor classes: overloading and implicit higher-order polymorphism (Site not responding. Last check: 2007-10-10)
		A system of constructor classes: overloading and implicit higher-order polymorphism
		This paper describes a flexible type system which combines overloading and higher-order polymorphism in an implicitly typed language using a system of constructor classes -- a natural generalization of type classes in Haskell.
		The underlying type system permits higher-order polymorphism but retains many of many of the attractive features that have made the use of Hindley/Milner type systems so popular.
	www.cse.ogi.edu /~mpj/pubs/fpca93.html (208 words)

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