What is Class invariant?

apoubiswas

0 like 0 dislike
1 views
Share with your friends

1 Answers

hdshahin01

Call

In computer programming, specifically object-oriented programming, a class invariant is an invariant used for constraining objects of a class. Methods of the class should preserve the invariant. The class invariant constrains the state stored in the object.

Class invariants are established during construction and constantly maintained between calls to public methods. Code within functions may break invariants as long as the invariants are restored before a public function ends. With concurrency, maintaining the invariant in methods typically requires a critical section to be established by locking the state using a mutex.

An object invariant, or representation invariant, is a computer programming construct consisting of a set of invariant properties that remain uncompromised regardless of the state of the object. This ensures that the object will always meet predefined conditions, and that methods may, therefore, always reference the object without the risk of making inaccurate presumptions. Defining class invariants can help programmers and testers to catch more bugs during software testing.

0 like 0 dislike
1 views
Talk Doctor Online in Bissoy App
What is Bung Tomo-class corvette?

The Bung Tomo class is a class of three Indonesian multi role patrol corvettes or Multirole Light Frigates by Indonesia. They were originally built for the Royal Brunei Navy and...

1 Answers 1 views
What is Danae-class cruiser?

The Danae or D class consisted of eight light cruisers built for the Royal Navy at the end of World War I which also saw service in World War II....

1 Answers 1 views
What is Fiji-class cruiser?

The Fiji-class cruisers were a class of eleven light cruisers of the Royal Navy that saw extensive service throughout the Second World War. Each ship of the class was named...

1 Answers 1 views
What is Linnet-class minelayer?

The Linnet class were a class of three small coastal minelayers commissioned into the Royal Navy just before the Second World War.

1 Answers 1 views
What is Sukanya-class patrol vessel?

The Sukanya-class patrol vessels are large, offshore patrol craft in active service with the Indian Navy. Three lead ships were built by Korea Tacoma, now part of Hanjin Group. Vessels...

1 Answers 1 views
What is Kontsevich invariant?

In the mathematical theory of knots, the Kontsevich invariant, also known as the Kontsevich integral of an oriented framed link, is a universal Vassiliev invariant in the sense that any...

1 Answers 1 views
What is Shift-invariant system?

A shift invariant system is the discrete equivalent of a time-invariant system, defined such that if y...

1 Answers 1 views
What is Hopf invariant?

In mathematics, in particular in algebraic topology, the Hopf invariant is a homotopy invariant of certain maps between n-spheres.

1 Answers 1 views
What is Yamabe invariant?

In mathematics, in the field of differential geometry, the Yamabe invariant, also referred to as the sigma constant, is a real number invariant associated to a smooth manifold that is...

1 Answers 1 views
What is Invariant manifold?

In dynamical systems, a branch of mathematics, an invariant manifold is a topological manifold that is invariant under the action of the dynamical system. Examples include the slow manifold, center...

1 Answers 1 views
X