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Topic: Operator overloading

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	Operator overloading - Wikipedia, the free encyclopedia
		However, in C++ templates or even C macros, operator overloading is needed in writing down generic, primitive operations such as summing elements when implementing a vector template.
		Operator overloading has been criticized because it allows programmers to give operators completely different functionality depending on the types of their operands.
		Because operator overloading allows the original programmer to change the usual semantics of an operator and to catch any subsequent programmers by surprise, it is usually considered good practice to use operator overloading with care.
	en.wikipedia.org /wiki/Operator_overloading (555 words)

	Hexapedia - Operator overloading (via CobWeb/3.1 planetlab2.cs.umd.edu) (Site not responding. Last check: 2007-11-07)
		Operator overloading provides more than an aesthetic benefit when the language allows operators to be invoked implicitly in some circumstances.
		Criticisms Operator overloading has been criticised because it allows programmers to give operators completely different functionality depending on the types of their operands.
		Because operator overloading allows the programmer to change the usual semantics of an operator, it is usually considered good practice to use operator overloading with care.
	www.hexafind.com.cob-web.org:8888 /encyclopedia/operator_overloading (216 words)

	8.3 Operator Overloading and Non-Member Functions (Site not responding. Last check: 2007-11-07)
		When operator overloading is achieved using non-member function, there are two cases to be considered: the overloaded operator uses only the public interface of the class(es) involved in the overloading, or it requires access to the private data of the class(es).
		Overloading of the stream I/O operators for the Array class illustrates the use of non-member function to overload an operator when the class in which the operator is defined is unavailable for modification.
		However, to perform the binary-level I/O operation, it is necessary to know the address of the array to be written, but it is undesireable to add a method in the Array class to return the base address of its encapsulated array, as this would allow any code to manipulate the encapsulated array.
	www.prenhall.com /divisions/esm/app/kafura/secure/chapter8/html/8.3_operator_overloading.htm (1276 words)

	Operator Overloading in Visual Basic 2005 (Visual Studio 2005 Technical Articles) (Site not responding. Last check: 2007-11-07)
		Operator overloading is a powerful tool that allows you to redefine many operators (addition, subtraction, and so on) within classes and structures, making them more useful and relevant to the class or structure in question.
		Operator overloading is the ability for you to define procedures for a set of operators on a given type.
		Note that overloaded operators are always shared methods that always return a value, though the return value need not be of the same type as the types on which the operation is performed.
	msdn.microsoft.com /library/en-us/dnvs05/html/vboperatoroverloading.asp?frame=true (3275 words)

	8 Operator Overloading 8.1 Introduction to Operator Overloading (Site not responding. Last check: 2007-11-07)
		Operator overloading is the ability to define a new meaning for an existing (built-in) operator.
		While all of these operators have predefined and unchangeable meanings for the built-in types, each operator can be given a specific interpretation for individual user-defined classes or combinations of user-defined classes.
		In many cases, the use of overloaded operators serves some or all of these purposes simultaneously.
	www.prenhall.com /divisions/esm/app/kafura/secure/chapter8/html/8.1_introduction.htm (320 words)

	Operator overloading
		Functions overloading operators can be defined either as simple functions separated from any class definition or as members of a class.
		Another way to overload an operator is to define the function overloading an operator as a member of the class.
		We have seen how to overload the binary meaning of the operator, to overload the unary operator, all we need to do, is to decrease the number of argument it takes.
	ist.marshall.edu /ist482/l11.html (1857 words)

	D Programming Language - Operator Overloading
		Overloading is accomplished by interpreting specially named struct and class member functions as being implementations of unary and binary operators.
		Since ++e is defined to be semantically equivalent to (e += 1), the expression ++e is rewritten as (e += 1), and then checking for operator overloading is done.
		Overloading the cast operator does not affect implicit casts, it only applies to explicit casts.
	www.digitalmars.com /d/operatoroverloading.html (983 words)

	Operator Overloading and "This" (Site not responding. Last check: 2007-11-07)
		NOTE: the point of operator overloading is to be intuitive.
		In the overloaded operator case however, the compiler is smart enough to figure out that when you write
		To summarize, sometimes you have a choice of defining the overloaded operator function as a member function or a non-member function.
	www.cs.uregina.ca /Links/class-info/210/Overloading (1086 words)

	Operator Overloading
		While all of these operator have a predefined and unchangeable meaning for the built-in types, all of these operators can be given a specific interpretation for different classes or combination of classes.
		Since the overloaded subscript operator returns a reference (specifically an "int&"), it is legitimate to have the subscript operator appear in an expression on the left-hand side of the assignment operator.
		Again notice that there is nothing "special" about the operator[] method, except that its name must be exactly as written in order to communicate to the compiler that this method is, in fact, to be treated as an overloading of the built-in "[]" operator for objects of the Array class.
	people.cs.vt.edu /~kafura/cs2704/op.overloading.html (1231 words)

	Operator overloading : Operator overloading
		nl:operator-overloadingpl:przeciÄÅ¼anie operatorÃ³wzh-cn:运算符重载 In computer programming, operator overloading (less commonly known as ad-hoc polymorphism) is a specific case of polymorphism in which some or all of operators like +, = or -are-treated-as-polymorphic-functions-and-as-such-have-different-behaviours-depending-on-the-types-of-its-arguments.
		nl:operator-overloadingpl:przeciÄÅ¼anie operatorÃ³wzh-cn:运算符重载 In computer programming, operator overloading (less commonly known as ad-hoc polymorphism) is a specific case of polymorphism in which some or all of operators like
		"> Operator overloading has been criticised because it allows programmers to give operators completely different functionality depending on the types of their operands.
	www.gogeeky.net /title/operator-overloading (205 words)

	Operator Overloading - C# to IL
		The overloaded > operator translates into the function op_GreaterThan and a + gets converted to op_Addition etc. In the first program of this chapter, we have overloaded the + operator in class yyy to facilitate adding of two yyy objects.
		In the IL code given earlier, due to the presence of operator overloads in the C# code, the function op_Implicit was called.
		In this case, since there are no operator overloads, the object reference to object a is simply put on the stack.
	www.vijaymukhi.com /documents/books/ilbook/chap5.htm (4171 words)

	Operator overloading (Site not responding. Last check: 2007-11-07)
		Operator overloading is usually only a syntactic sugar, and it canbe easily emulated by function calls:
		This is the case with the Ruby operator
		Operator overloading has been criticised because it allows programmers to give operators completely different functionalitydepending on the types of their operands.
	www.therfcc.org /operator-overloading-178812.html (216 words)

	Operator Overloading (C++) (Site not responding. Last check: 2007-11-07)
		The operator keyword declares a function specifying what operator-symbol means when applied to instances of a class.
		The name of an overloaded operator is operatorx, where x is the operator as it appears in the following table.
		Although overloaded operators are usually called implicitly by the compiler when they are encountered in code, they can be invoked explicitly the same way as any member or nonmember function is called:
	msdn2.microsoft.com /en-us/library/5tk49fh2.aspx (271 words)

	operator+ overloading problem - GameDev.Net Discussion Forums
		Posted - 7/21/2004 8:58:04 AM operator+ has to create a copy somewhere, otherwise it would be no different to operator+=, creating a copy in the parameter seems like as good a place as any to create it.
		operator+ has to create a copy somewhere, otherwise it would be no different to operator+=, creating a copy in the parameter seems like as good a place as any to create it.
		If you get a problem with your delete operation, then it is because you're either deleting something that shouldn't be (invalid pointer or already deleted) or memory has been overwritten somewhere.
	www.gamedev.net /community/forums/viewreply.asp?ID=1572089 (1511 words)

	Operator overloading - Definition, explanation
		is overloaded, because the signature for each method differs in its arguments.
		is overloaded, because it make not actually differ in signature from the base implementation.
		Because of this there is often confusion between operator overrides and operator overloads, and most developers blur any distinction and refer to both as operator overloads, which is semantically incorrect.
	www.calsky.com /lexikon/en/txt/o/op/operator_overloading.php (467 words)

	Operator Overloading Usage Guidelines (Site not responding. Last check: 2007-11-07)
		Use operator overloading in cases where it is immediately obvious what the result of the operation will be.
		However, it is not appropriate to use the or operator to create the union of two database queries, or to use shift to write to a stream.
		For this reason, it is a CLS requirement for all types that overload operators to include a secondary method with an appropriate domain-specific name that provides the equivalent functionality.
	msdn.microsoft.com /library/en-us/cpgenref/html/cpconOperatorOverloadingUsageGuidelines.asp?frame=true (247 words)

	Andrew Jenner's WebLog : Operator overloading
		Operator overloading is no exception, but it as C++ features go it isn't that difficult to use in a safe manner, nor is it intrinsically slow.
		When overloading operators, it is important to respect the meaning + is addition - is subtraction and so on; just about everyone can agree on the semantics.
		It was written in C++, with operator overloads by people who decided that the number of copies introduced in code was irrelevant because they wanted to "say what they meant".
	blogs.msdn.com /ajenner/archive/2004/08/05/209312.aspx (2565 words)

	.NET Reference Guide > Operator Overloading (Site not responding. Last check: 2007-11-07)
		Operater overloading is a very handy thing in that it allows you to use the common operators for common tasks, rather than having to write special functions.
		The other potential problem with operator overloading is that, although you can change the meaning of an operator, you can't change the precedence of operators.
		As a friend once said, "operator overloading turns every programmer into an incompetent language designer." The only benefit I see in operator overloading is that it makes for slightly smaller source code.
	www.informit.com /guides/content.asp?g=dotnet&seqNum=509&rl=1 (1216 words)

	C++ Notes: Operator Overloading (Site not responding. Last check: 2007-11-07)
		It's common to define a meaning for an existing operator for objects of a new class.
		Operators are defined as either member functions or friend functions.
		Operator overloading isn't strictly necessary unless other classes or functions expect operators to be defined (as is sometimes the case).
	www.fredosaurus.com /notes-cpp/oop-overloading/operoverloading.html (279 words)

	DevHawk - Passion * Technology * Ruthless Competence (Site not responding. Last check: 2007-11-07)
		In C++, the prefix and postfix versions overloads are specified separately, though there is a template that provides a standard implementation of the postfix version in terms of the prefix version.
		In C#, this pseudo-code is generated by the compiler, not the overloaded operator implementation.
		This means you only build the single increment operation and the C# compiler generates the appropriate IL to handle the pre- and post fix scenarios.
	devhawk.net /2003/07/10/Operator+Overloading+In+C.aspx (986 words)

	Operator overloading - Glasgledius (Site not responding. Last check: 2007-11-07)
		Operator overloading (less commonly known as ad-hoc polymorphism) is a programming technique in which some or all of operators like
		Only in case when operators can be called implicitly they are of some use other than aesthetics.
		C++'s usage of the "<<" operator is a particularly bad example: The expression
	www.glasglow.com /E2/op/Operator_overloading.html (183 words)

	Operator Overloading
		Some languages, including HaskellLanguage, PrologLanguage, and SmalltalkLanguage allow the user to provide their own operators, where an operator is a string of punctuation characters which can be used with infix/postfix/prefix syntax, rather than the standard "function call" syntax.
		Certainly true in C; but in C++ operator overloading (indeed, most operators) can be (most of the time) be viewed as SyntacticSugar.
		C++ doesn't allow redefining operations on the standard types; part of C/C++ culture is that mutating the language is a BadThing.
	c2.com /cgi/wiki?OperatorOverloading (2091 words)

	FreeFEM3D (aka ff3d): Structured3DVector< T > Class Template Reference (Site not responding. Last check: 2007-11-07)
		This class defines a template Vector class to store huge quantity of datas defined on a 3d structure (ie: defined on a 3d mesh).
		Referenced by Structured3DVector< bool >::nx(), Structured3DVector< bool >::ny(), Structured3DVector< bool >::nz(), Structured3DVector< bool >::operator()(), Structured3DVector< bool >::operator=(), Structured3DVector< bool >::shape(), Structured3DVector< bool >::Structured3DVector(), and Structured3DVector< bool >::~Structured3DVector().
		Referenced by Structured3DVector< bool >::operator()(), Structured3DVector< bool >::Structured3DVector(), and Structured3DVector< bool >::~Structured3DVector().
	www.freefem.org /ff3d/doxygen/classStructured3DVector.html (862 words)

	C (programming language) - Wikipedia, the free encyclopedia (via CobWeb/3.1 planet03.csc.ncsu.edu) (Site not responding. Last check: 2007-11-07)
		Eventually it was decided to port the operating system to the office's PDP-11, but faced with the daunting task of translating a large body of custom-written assembly language code, the programmers began considering using a portable, high-level language so that the OS could be ported easily from one computer to another.
		Later, the entire operating system was rewritten in C, an unprecedented move at a time when nearly all operating systems were written in assembly.
		By 1973, the C language had become powerful enough that most of the Unix kernel, originally written in PDP-11 assembly language, was rewritten in C. This was one of the first operating system kernels implemented in a language other than assembly.
	en.wikipedia.org.cob-web.org:8888 /wiki/C_programming_language (5598 words)

	VFPConversion Article - Operator Overloading (Site not responding. Last check: 2007-11-07)
		It is also possible to create additional "overloads for overloaded operators" (things are getting a tad confusing here), where one of the two values is of a different type.
		Operator overloading is not limited to == and != operators either.
		Operators such as + and - are mostly useful for math and number-related objects.
	www.vfpconversion.com /Article.aspx?quickid=050124 (2846 words)

	Groovy - Operator Overloading (Site not responding. Last check: 2007-11-07)
		Groovy supports operator overloading which makes working with Numbers, Collections, Maps and various other data structures easier to use.
		Various operators in Groovy are mapped onto regular Java method calls on objects.
		This allows you the developer to provide your own Java or Groovy objects which can take advantage of operator overloading.
	groovy.codehaus.org /Operator+Overloading (180 words)

	Operator Overloading in C# (Site not responding. Last check: 2007-11-07)
		Operator Overloading is pretty useful concept derived from C++ by C#.For eg.
		Operator Overloading should return a CLS type and not void.
		Same Operator can be overloaded with different function signature for eg.
	www.c-sharpcorner.com /Language/OperatorOverloadingPSD.asp (322 words)

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