
	Where results make sense

Topic: Class invariant

Related Topics

middle class

working class

Spectral class

social class

Bathurst class corvette

her class

Ohio class submarines

class computer science

equivalence class

Oliver Hazard Perry class frigate

Bathurst class

Attack class patrol boat

In the News (Wed 9 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Class invariant - Wikipedia, the free encyclopedia
		Class invariants are established during construction and constantly maintained between calls to public methods.
		This is an example of a class invariant in D.
		The invariant must hold to be true after the constructor is finished, before the destructor gets called, and at the entry and exit of all public member functions.
	en.wikipedia.org /wiki/Class_invariant (194 words)

	Class (computer science) - Wikipedia, the free encyclopedia
		A class describes a collection of encapsulated instance variables and methods (functions), possibly with implementation of those types together with a constructor function that can be used to create objects of the class.
		An invariant is what distinguishes datatypes and classes from each other, that is, a class does not allow use of all possible values for the state of the object, only those that are well-defined by the semantics of the intended use of the datatype.
		Abstract classes are often used to represent abstract concepts or entities.
	en.wikipedia.org /wiki/Class_(computer_science) (4031 words)

	Equivalence class - Wikipedia, the free encyclopedia
		The equivalence classes are known as right cosets of H in G; one of them is H itself.
		The homotopy class of a continuous map f is the equivalence class of all maps homotopic to f.
		In natural language processing, an equivalence class is a set of all references to a single person, place, thing, or event, either real or conceptual.
	en.wikipedia.org /wiki/Equivalence_class (867 words)

	class interval - Hutchinson encyclopedia article about class interval (Site not responding. Last check: 2007-09-07)
		In statistics, the range of each class of data, used when arranging large amounts of raw data into grouped data.
		To obtain an idea of the distribution, the data are broken down into convenient classes (commonly 6–16), which must be mutually exclusive and are usually equal in width to enable histograms to be drawn.
		This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.
	encyclopedia.farlex.com /class+interval (170 words)

	equivalence class - Article and Reference from OnPedia.com
		This relation gives rise to exactly two equivalence classes: 0 consisting of all even numbers, and 1 consisting of all odd numbers.
		The equivalence classes are known as right cosets of H in G.
		Because of the properties of an equivalence relation it holds that a is in a" title="a">a and that any two equivalence classes are either equal or disjoint.
	www.onpedia.com /encyclopedia/equivalence-class (729 words)

	D Programming Language - Classes
		Class invariants are used to specify characteristics of a class that always must be true (except while executing a member function).
		The invariant is checked when a class constructor completes, at the start of the class destructor, before a public or exported member is run, and after a public or exported function finishes.
		Class invariants are inherited, that is, any class invariant is implicitly anded with the invariants of its base classes.
	www.digitalmars.com /d/class.html (2514 words)

	[No title] (Site not responding. Last check: 2007-09-07)
		If a real need exists for derived classes that must not (or should not, if the "should not" is strong enough to warrant a language mod) call their base class constructor, then I think that special case should warrant a special purpose keyword or other tagging construct.
		More painfully, it requires all class developers to be this conscientious, because even though they may not have expected anyone to derive a class from their class, someone may find a need to do so.
		I think the earlier call should be made so that the derived class constructor is guaranteed that the base constructor has satisfied itself and that the object is in a valid state (at least for the base class) before the remaining derived code tries to use any of it.
	www.digitalmars.com /drn-bin/wwwnews?D/8759 (730 words)

	3.1 Composition
		Invariance Properties are used to describe side-effects of methods by specifying which parts of the object environment remain unchanged under method execution.
		E.g., if an invariant only states properties of objects of classes that are declared in the current module (i.e., not imported), this invariant can only be violated by methods of these classes or their subclasses, i.e., not by imported methods.
		Enforcing all subtypes to be behavioral subtypes reduces the effort of verification dramatically as it is sufficient to show the preservation of invariants of classes which are leaves of the subtyping tree.
	www.cs.iastate.edu /~leavens/FoCBS/mueller-node6.html (2041 words)

	Class invariant: Facts and details from Encyclopedia Topic (Site not responding. Last check: 2007-09-07)
		In mathematics, given a set x and an equivalence relation ~ on x, the equivalence class of an element a in x is the subset of all elements...
		This is an example of a class invariant in D D programming language quick summary:
		The invariant must hold to be true after the constructor is finished, EHandler: no quick summary.
	www.absoluteastronomy.com /encyclopedia/c/cl/class_invariant.htm (329 words)

	Using Assertions in Java Programs - A Novel Approach
		Class invariant is represented by the marker "@inv".
		In the case of anonymous classes, where it is not possible to specify the invariant before the class, it may appear in any Javadoc comment as part of the class.
		For both interfaces and class hierarchies, preconditions are disjuncted, whereas postconditions and class invariants are conjuncted.
	www.mmsindia.com /DBCForJava.html (1650 words)

	ipedia.com: Invariant Article (Site not responding. Last check: 2007-09-07)
		The property of being an invariant is invariance.
		The variance of a probability distribution is invariant under translations of the real line; hence the variance of a random variable is unchanged by the addition of a constant to it.
		A class invariant is a constraint that should be satisfied by every method of a class.
	www.ipedia.com /invariant.html (452 words)

	Invariant - Wikipedia, the free encyclopedia
		Invariant (physics) a quantity conserved by system symmetry
		Invariant representation (cognitive science), the form or essence of something, an abstraction from particulars
		The Invariant Society, the undergraduate mathematical society of Oxford University
	www.sciencedaily.com /encyclopedia/invariant (130 words)

	Invariants (Site not responding. Last check: 2007-09-07)
		A class invariant is a condition that should never be violated in any object, after it has been created.
		Invariants have not proven to be as widely used as pre- and post- conditions, which are quite ubiquitous in Sather code.
		The private call to 'internal_delete_last' does violate the invariant, but it is not checked, since it is a private routine.
	www.gnu.org /software/sather/docs-1.2/tutorial/safety2219.html (274 words)

	Design By Contract - Gavin Scott
		The class invariant must be guaranteed as a result of the constructor and all exported member functions.
		As with retrying, it is the responsibility of the rescue clause to restore the class invariant.
		The invariants of all the parents of a class apply to the class itself.
	www.compapp.dcu.ie /research/papers/1999/3099.html (4709 words)

	Endoplasmic Reticulum-Associated Degradation-Induced Dissociation of Class II Invariant Chain Complexes Containing a ...
		Class II associated with T241A is initially retained in the ER.
		The transmembrane segment of invariant chain mediates binding to MHC class II molecules in a CLIP-independent manner.
		Invariant chain influences the immunological recognition of MHC class II molecules.
	www.jimmunol.org /cgi/content/full/173/4/2586 (5470 words)

	home
		The invariant is evaluated at the entry and exit points of all public methods in a class.
		Invariant may become false during execution, but must be restored to true by the method returns.
		A Class Invariant is a Boolean expression used to define the valid properties of correctly.
	www.cis.ksu.edu /~hankley/d841/old/assertion (2838 words)

	DBC.PUBC-2 Provide '@invariant' contract for all "public" classes
		Class invariants are contracts that the objects of the class should always satisfy.
		A class invariant is often implicit in the design of a class, so by making it explicit, you help prevent bugs that violate the class' intended behavior.
		Provide an '@invariant' contract or document the lack of one using '/ @invariant** $none */'.
	www.cs.indiana.edu /csg/links/parasoft/jtest/dbcpubc.htm (143 words)

	The Daikon Invariant Detector Developer Manual
		Invariants over a scalar and a sequence, such as “x is a member of a[]”.
		Daikon's invariants are first instantiated, then are presented samples (tuples of values for all the variables of interest to the invariant; this might be a 1-tuple, a 2-tuple, or a 3-tuple) in turn.
		Daikon can print invariants in five formats: its native format, Java format, IOA format (for use with the IOA programming language), ESC format (which is a subset of the JML specification language), and Simplify format (for use by the Simplify theorem-prover).
	pag.csail.mit.edu /daikon/download/doc/developer.html (7462 words)

	Jass - Tour - Introduction to Jass (Site not responding. Last check: 2007-09-07)
		A class invariant specifies the global state of a class.
		The class invariant is checked whenever a method of the class is called or ended.
		A class annotated with Jass assertions must be contained in a file with extension '.jass' (or with extension '.java' if a destination directory was specified).
	www.cs.may.ie /~jpower/Courses/formalMethods/labs/jassdoc/tour (1383 words)

	DBC.PKGC-4 Provide '@invariant' contract for all package-private classes
		Requires that all package-private classes have an '@invariant' contract.
		A class invariant is often implicit in the design of a class, so by making it explicit, you help prevent bugs that violate the class's intended behavior.
		Provide an '@invariant' contract or document the lack of a contract using '/ @invariant** $none */'.
	www.cs.indiana.edu /csg/links/parasoft/jtest/dbcpkgc.htm (151 words)

	Invariant chain trimers are sequestered in the rough endoplasmic reticulum in the absence of association with HLA class ... (Site not responding. Last check: 2007-09-07)
		Invariant chain trimers are sequestered in the rough endoplasmic reticulum in the absence of association with HLA class II antigens -- Marks et al.
		Invariant chain trimers are sequestered in the rough endoplasmic reticulum in the absence of association with HLA class II antigens
		invariant chain in the ER may be important for class II antigen function.
	www.jcb.org /cgi/content/abstract/111/3/839 (941 words)

	TWiki . Dev . NiceConstructors
		One possibility is to allow that each class can have one constructor without any arguments that is called after the fields are initialized and the constructor of the superclass is called.
		The invariant should be true on exiting a constructor, but need not be on entering, so some way of marking the factory method as for object creation is needed.
		The invariant is normally a condition on the values of the fields.
	nice.sourceforge.net /cgi-bin/twiki/view/Dev/NiceConstructors?skin=print (4077 words)

	Synthesis of Wiring Signature-Invariant Equivalence Class Circuit Mutants and Applications to Benchmarking
		The mutants of interest are the ones that belong to the wiring-signature-invariant equivalence class {\cal N}_\sigma{}_0, i.e.
		Notably, circuits in this class are not random, although for unbiased testing and benchmarking purposes, mutant selections from this class are typically random.
		The 14,400 benchmarking experiments with 3200 mutants in 4 equivalence classes, covering 13 typical EDA algorithms, demonstrate that an unbiased random selection of such circuits can lead to statistically meaningful differentiation and improvements of existing and new algorithms.
	csdl2.computer.org /persagen/DLAbsToc.jsp?resourcePath=/dl/proceedings/&toc=comp/proceedings/date/1998/8359/00/8359toc.xml&DOI=10.1109/DATE.1998.655928 (301 words)

	Phosphorylation Regulates the Delivery of MHC Class II Invariant Chain Complexes to Antigen Processing Compartments -- ...
		Segregation of MHC class II molecules from MHC class I molecules in the Golgi complex for transport to lysosomal compartments.
		Extensive trafficking of MHC class II-invariant chain complexes in the endocytic pathway and appearance of peptide-loaded class II in multiple endocytic compartments.
		The invariant chain is a phosphorylated subunit of class II molecules.
	www.jimmunol.org /cgi/content/full/160/10/4850 (6726 words)

	Programming by Contract (Site not responding. Last check: 2007-09-07)
		Also, each class has an invariant which must be satisfied after any changes to the object represented by the class.
		As an example, you might have a routine which expects an incoming paramater to be a non-NULL class pointer and guarantees to return the class with some new data stuffed in it.
		The class invariant would check that the class is in a valid state after the call to someFunction.
	www.cs.unc.edu /~stotts/COMP204/contract.html (557 words)

	MF Bliki: TestInvariant
		This invariant states the properties of the class that must always be true.
		A object must always satisfy its invariant (unless it's in the middle of doing anything.) Using Eiffel the class invariant is automatically checked before calling a method (in pre-condition checking) and after (in post-condition checking).
		A simple invariant for a bowler is that these values should all by non-negative.
	martinfowler.com /bliki/TestInvariant.html (270 words)

	[No title] (Site not responding. Last check: 2007-09-07)
		If the derived class or overriding method doesn't define a contract, it inherits that of the super class or interface.
		Note that if there are multiple @pre conditions for a given method, the preconditions are ANDed together into one virtual @pre condition and then ORed with the virtual @pre conditions for the other methods in the chain of overridden methods.
		Since any client can modify such a field arbitrarily, there is no way for the class to ensure any invariant on it.
	people.csail.mit.edu /cpacheco/docs/spec10.txt (1763 words)

	Templatestrmod::strmod::PreAllocBuffer< TInitialAlloc > class Reference
		A template class for buffers that contain a certain fixed amount of storage that's not dynamically allocated.
		Your class invariant should be as strict as possible.
		The class invariant is used to detect when the class goes into a bad state, so all possible bad states should be caught by the invariant.
	www.omnifarious.org /~hopper/StrMod/doxygen/classstrmod_1_1strmod_1_1PreAllocBuffer.html (152 words)

	[No title] (Site not responding. Last check: 2007-09-07)
		The order of initialization for global variables (including class statics) between translation units is undefined.
		Nonvirtual base classes are initialized in left-to-right order as they are declared, and so ArrayBase is initialized before Container.
		If the outer operator+()'s second parameter is evaluated first (as it is, for example, under MSVC 4.x), the output will be the incorrect "size = 10, used = 10" since the outer itoa() is executed first and then the inner itoa() will clobber the results of the outer itoa() before either value is used.
	cpptips.hyperformix.com /cpptips/guruNum12_sol (1166 words)

	Design by contract: building reliable software
		I as an assertion is a correct invariant of class C, iff
		The invariant of a class affects all the contracts between a routine of the class and a client.
		The creation procedure must set the state of the new object to satisfy the class invariant.
	www.cs.unb.ca /profs/wdu/cs6055/designbycontract.htm (852 words)

Try your search on: Qwika (all wikis)