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Topic: Common operator notation


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In the News (Fri 25 Dec 09)

  
 Operator at opensource encyclopedia   (Site not responding. Last check: 2007-10-20)
Operators are often in practice just partial functions, a common phenomenon in the theory of differential equations since there is no guarantee that the derivative of a function exists.
Three main operators are key to vector calculus, the operator ∇, known as gradient, where at a certain point in a scalar field forms a vector which points in the direction of greatest change of that scalar field.
Operators as observables are a key part of the theory of quantum mechanics.
wiki.tatet.ru /en/Operator.html   (1511 words)

  
 Order of operations   (Site not responding. Last check: 2007-10-20)
In arithmetic and elementary algebra, certain rules are used for the order in which the operations in algebraic expressions are to be evaluated.
These precedence rules (which are mere notational conventions, not mathematical facts) are also used in many programming languages and by most modern calculators.
In computing the standard algebraic notation is known as infix notation.
hallencyclopedia.com /Order_of_operations   (544 words)

  
 Common operator notation -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-10-20)
In (The branch of engineering science that studies (with the aid of computers) computable processes and structures) computing, common operator notation is just one way of notating mathematical expressions as a
linear sequence of tokens, or (An agent that operates some apparatus or machine) operators, but this is not the only way.
precedence precedes or succeeds an operand, the operators closer to
www.absoluteastronomy.com /encyclopedia/c/co/common_operator_notation.htm   (733 words)

  
 12: Operator Overloading   (Site not responding. Last check: 2007-10-20)
Operator overloading is just “syntactic sugar,” which means it is simply another way for you to make a function call.
Whether the operator is defined as a global function (one argument for unary, two for binary) or a member function (zero arguments for unary, one for binary – the object becomes the left-hand argument).
One of the most convenient reasons to use global overloaded operators instead of member operators is that in the global versions, automatic type conversion may be applied to either operand, whereas with member objects, the left-hand operand must already be the proper type.
www.eng.usf.edu /~agage/class.old/text/Chapter12.html   (7982 words)

  
 [No title]   (Site not responding. Last check: 2007-10-20)
The same function name or operator may be overloaded to denote several actual functions, leaving the compiler to pick the correct one.
Operators and methods of subclasses can be defined to be evaluated in two contexts: Based on object type, leading to an evaluation within the scope of the superclass.
Definining operators for such classes allows a programmer to provide a more conventional and convenient notation for manipulating objects than could be achieved using only the basic functional notation.
foe.mmu.edu.my /course/ecp4146/lecture_4.doc   (4185 words)

  
 Operator Overloading in C++
Operator overloading allows member function calls (and even "regular" function calls) to be written using infix operator notation.
Operator overloading permits a member function to be defined such that a program can utilize more natural notations, allowing the writing of p +q in a program.
Once operators for addition, subtraction, multiplication, and division of rational numbers are defined, a programmer can view rational numbers as being "built-in" to C++, allowing algorithms involving rational numbers to be expressed quite naturally.
cba.winthrop.edu /thackerw/csci208/LabHandouts/operator_overloading_in_c.htm   (1721 words)

  
 Overloading - Syntactic Heroin? | Lambda the Ultimate   (Site not responding. Last check: 2007-10-20)
Operators don't always need to be member functions (except for a certain set).
The reason operator overloading is critical to the success of programming languages is that it allows the solution to be written in the language of the problem domain.
Operators should only be overloaded with a specific problem domain in mind, and it should be clear that the solution at hand is written for and in that domain.
www.luvfeed.org /cache/4451   (2083 words)

  
 March 1992/Stepping Up To C++   (Site not responding. Last check: 2007-10-20)
Operator overloading enables the implementation of user-defined types that are nearly indistinguishable from built-in types.
When you rewrite the operator as a non-member function, you must add a second (or is it a first?) explicit argument.
Since the left operand of operator+ is passed by value, changing the value of the formal parameter has no effect on the actual argument passed to operator+.
www.tcnj.edu /~hernande/cujv5/html/10.03/saks/saks.htm   (2693 words)

  
 Encyclopedia article on Operator [EncycloZine]   (Site not responding. Last check: 2007-10-20)
Overloading, in which for example addition, say, is thought of as a single operator able to act on numbers, vectors, matrices...
Operators are often written in calligraphy to differentiate them from standard functions.
Main article: Laplace transform The Laplace transform is another integral operator and is involved in simplifying the process of solving differential equations.
encyclozine.com /Operator   (1456 words)

  
 Operator Overloads
Operator overloading means the process of creating new versions of these operators for use with user-defined types.
Operator overloading is done for the purpose of using familiar operator notation on new user-defined types.
It is a generally accepted practice for operator overloads, since this function is intended for use with this class and it allows faster performance.
www.cs.fsu.edu /~myers/cop3330/notes/overload.html   (1387 words)

  
 C++ Annotations Version 4.4.1d
Now that we've covered the overloaded assignment operator in depth, and now that we've seen some examples of other overloaded operators as well (i.e., the insertion and extraction operators), let's take a look at some other interesting examples of operator overloading.
Furthermore, the array operator is interesting in that it both produces a value and accepts a value, when used, respectively, as a right-hand value and a left-hand value in expressions.
It visits all elements implied by an iterator-range, and performs a requested binary operation on a common element and each of the elements in the range, returning the accumulated result after visiting all elements.
www.oopweb.com /CPP/Documents/CPPAnnotations/Volume/cplusplus06.html   (4608 words)

  
 CSC2050 Sample Assessment - Multiple Choice
Because some operators are commutative (the order of operands doesn't matter) so we have to use a global function which will accept operands in either order.
...operator look-up has to be done at compile time, but the compiler can't know what the run-time operands to an operator will be
You can have two or more overloadings of the same operator in a single class, as long as their signatures are distinct.
www.csse.monash.edu.au /~damian/CSC2050/Assessment/html/sample_multiple_choice.html   (5786 words)

  
 Advanced C++ Topics   (Site not responding. Last check: 2007-10-20)
You can overload an operator by defining a function whose name is operator followed by the operator symbol.
Some operators must access the internals of the class and must be member functions.
When a logic error occurs, it never makes sense to retry the same operation, but a runtime error may have some chance of going away when the operation is attempted again.
www.csci.csusb.edu /turner/docs/201/ch17/ch17.html   (2575 words)

  
 Translation Guide: Moving Your Programs from Managed Extensions for C++ to C++/CLI   (Site not responding. Last check: 2007-10-20)
The declaration of properties and operators has been extensively reworked in the revised language design, hiding the underlying implementation details that were exposed in the original design.
More onerous, however, is the fact that the invocation of an operator had to be explicitly invoked through that name, thus precluding the two primary benefits of operator overloading: (a) the intuitive syntax, and (b) the ability to intermix new types with existing types.
The design of that family is typically represented by a class hierarchy in which there is an abstract base class declaring the common interface (the virtual functions) and a set of concrete derived classes which represent the actual family types in the application domain.
msdn.microsoft.com /library/en-us/dnvs05/html/TransGuide.asp?frame=true   (17304 words)

  
 How To Optimize C/C++ Source - Performance Programming   (Site not responding. Last check: 2007-10-20)
Iteration is a very common element in any program and there are many simple and effective optimizations that can be applied to loops.
CSE is a common optimization in compilers, and they do it better then you can do (they can manage the registers efficiently).
Postfix operators (i++) copy the existing value to a temporary object, increment the internal value, and then return the temporary.
bdn.borland.com /article/0,1410,28278,00.html   (3739 words)

  
 Operator Overloading   (Site not responding. Last check: 2007-10-20)
Extend operators in an accepted way, so that your class looks like it is one of the basic datatypes.
Sometimes it's expedient for global operations to be "honorary" members of the clas and access private members directly; such global operations are called friends, and we'll look at the syntax to do this soon.
Consider these suggestions, which all are based on common sense and the client's expectation that certain operations come in complete sets.
www.muine.org /~minhqt/Nax_website/cpp/week2day1b.html   (3444 words)

  
 [No title]   (Site not responding. Last check: 2007-10-20)
Most of the required operations would be short enough to warrant inlining, but for this homework it's not really necessary, so there's no bonus or penalty for using or not using inlines.
From the assignment discription: "hw2.cpp tests some of the math and other operators, but by far not all of them." Do not assume that you don't need to implement something because it is not in the provived test code.
I have operator RGB() written, and it is able to do d = a *.5, where d is RGB and a CMY, but not e=d+c.
daniel.6dns.org /isu/cs228/hw2/discussion_compile.txt   (10535 words)

  
 [No title]
E.g struct A { int *operator(); }; bool f(A a) { return a; } // Undeserved Error 64 * We were issuing an undeserved Info 1763 (const member function indirectly modifies class) when it returns a pointer to function.
In addition to "operator*" we are also on special alert for "operator*=" and "operator->*".
This was neither justified by the documentation nor by common sense and so "this" arguments are now immune to this treatment.
www.gimpel.com /html/pub80/bugfix80.txt   (14709 words)

  
 ccc_ch13.html
The purpose of this exercise was to get you used to the pointer notation and dynamic allocation.
and then reduce to the lowest common terms, by dividing through the greatest common divisor.
Templates let you design a family of related classes that differ by the type of some of the data members or member functions.
www.wiley.com /college/comp/horstmann318477/CCC2elab/ccc_ch13.html   (434 words)

  
 Lecture1/1: Point and RGB classes.
C++ built in operators are functions, with special calling notation
Think about this code (a common error for C++ beginners),
All the following member functions do not change the object, and are therefore defined as const.
www.cs.utah.edu /~xchen/columbia/session2/lec11/html   (661 words)

  
 Category:Computing - All About All
When the issues regarding this category have been resolved, remove this notice and the listing, but please do not remove this notice until the categorization has been fixed.
Computing has come to mean the operation and usage of computing machines, the electrical processes carried out within the computing hardware itself, and the theoretical concepts governing them (computer science).
For more information, see the main article about Computing.
www.allaboutall.info /article/Category:Computing   (147 words)

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