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Class or The Class may refer to:


Common uses not otherwise categorized

*
Class (biology) In biological classification, class ( la, classis) is a taxonomic rank, as well as a taxonomic unit, a taxon, in that rank. It is a group of related taxonomic orders. Other well-known ranks in descending order of size are life, domain, kingdom ...
, a taxonomic rank *
Class (knowledge representation) In knowledge representation, a class is a collection of individuals or objects. A class can be defined either by extension (specifying members), or by intension (specifying conditions), using what is called in some ontology languages like OWL. Acc ...
, a collection of individuals or objects *
Class (philosophy) A class is a collection whose members either fall under a predicate or are classified by a rule. Hence, while a set can be extensionally defined only by its elements, a class has also an intensional dimension that unite its members. When the ter ...
, an analytical concept used differently from such group phenomena as "types" or "kinds" *
Class (set theory) In set theory and its applications throughout mathematics, a class is a collection of sets (or sometimes other mathematical objects) that can be unambiguously defined by a property that all its members share. Classes act as a way to have set-like ...
, a collection of sets that can be unambiguously defined by a property that all its members share *
Hazard class Dangerous goods, abbreviated DG, are substances that when transported are a risk to health, safety, property or the environment. Certain dangerous goods that pose risks even when not being transported are known as hazardous materials ( syllabi ...
, a dangerous goods classification *
Social class A social class is a grouping of people into a set of Dominance hierarchy, hierarchical social categories, the most common being the Upper class, upper, Middle class, middle and Working class, lower classes. Membership in a social class can for ...
, the hierarchical arrangement of individuals in society, usually defined by wealth and occupation *
Working class The working class (or labouring class) comprises those engaged in manual-labour occupations or industrial work, who are remunerated via waged or salaried contracts. Working-class occupations (see also " Designation of workers by collar colou ...
, can be defined by rank, income or collar


Arts, entertainment, and media

* "The Class" (song), 1959 Chubby Checker song *
Character class In tabletop games and video games, a character class is a job or profession commonly used to differentiate the abilities of different game characters. In role-playing games (RPGs), character classes aggregate several abilities and aptitudes, ...
in role-playing games and other genres *
Class 95 (radio station) Class 95 is an English radio station of Mediacorp in Singapore. It is a 24-hour radio station that plays music from the 1990s to the present day, primarily competing with Kiss92. For over 20 consecutive years, Class 95FM is the number one Engli ...
, a Singaporean radio channel


Films

* ''Class'' (film), 1983 American film * ''The Class'' (2007 film), 2007 Estonian film * ''The Class'' (2008 film), 2008 film (''Entre les murs'')


Television

* ''Class'' (2010 TV series), a 2010 British television programme, broadcast on CBBC * ''Class'' (2016 TV series), a 2016 British spinoff from ''Doctor Who'' * ''The Class'' (TV series), a CBS sitcom


Literature

*'' Class: A Guide Through the American Status System'' by Paul Fussell * ''Class'' (Pacifico novel), a 2014 novel by Francesco Pacifico * ''Class'' (Rosenfeld novel), a 2017 novel by Lucinda Rosenfeld * ''The Class'' (Segal novel), a 1985 novel by Erich Segal


Computing

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Class (computer programming) In object-oriented programming, a class is an extensible program-code-template for creating objects, providing initial values for state (member variables) and implementations of behavior (member functions or methods). In many languages, the class n ...
, a fundamental concept of object-oriented programming *
Class (warez) CLASS (CLS) was a notorious and prolific warez group that existed between January 1, 1997 and January 9, 2004. The group was the target of federal raids such as Operation Fastlink. They specialized in cracked games, and sometimes had elaborate art ...
, a defunct group in the warez scene *
C++ classes A class in C++ is a user-defined type or data structure declared with keyword class that has data and functions (also called member variables and member functions) as its members whose access is governed by the three access specifiers ''private'' ...
, program-specific data types *
Class attribute (HTML) HTML attributes are special words used inside the opening tag to control the element's behaviour. HTML attributes are a modifier of an ''HTML element type''. An attribute either modifies the default functionality of an element type or provides fu ...
, a feature of many HTML and XHTML elements *
Class attributes (computer programming) In object-oriented programming, a class is an extensible program-code-template for creating objects, providing initial values for state (member variables) and implementations of behavior (member functions or methods). In many languages, the class n ...
, defining the structure of a class *
Complexity class In computational complexity theory, a complexity class is a set of computational problems of related resource-based complexity. The two most commonly analyzed resources are time and memory. In general, a complexity class is defined in terms of ...
, a set of problems of related complexity in computational complexity theory *
Java class file A Java class file is a file (with the filename extension A filename extension, file name extension or file extension is a suffix to the name of a computer file (e.g., .txt, .docx, .md). The extension indicates a characteristic of the file cont ...
, the interpretable bytecode of a compiled Java program *
Pseudo-class Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation of a document written in a markup language such as HTML or XML (including XML dialects such as SVG, MathML or XHTML). CSS is a cornerstone technol ...
, in cascading style sheets *
Type class In computer science, a type class is a type system construct that supports ad hoc polymorphism. This is achieved by adding constraints to type variables in parametrically polymorphic types. Such a constraint typically involves a type class T and ...
, a type system construct that supports polymorphism


Education

*
Class (education) A class in education has a variety of related meanings. It can be the group of students which attends a specific course or lesson at a university, school, or other educational institution, see ''Form (education)''. It can refer to a course it ...
, a group of students attending a specific course or lesson * Class, a
course (education) In higher education a course is a unit of teaching that typically lasts one academic term, is led by one or more instructors (teachers or professors), and has a fixed roster of students. A course usually covers an individual subject. Courses gene ...
* Class, a
lesson A lesson or class is a structured period of time where learning is intended to occur. It involves one or more students (also called pupils or learners in some circumstances) being taught by a teacher or instructor. A lesson may be either one ...
or course session, in education *
Classroom A classroom or schoolroom is a learning space in which both children and adults learn. Classrooms are found in educational institutions of all kinds, ranging from preschools to universities, and may also be found in other places where education ...
, a room where classes are held


Law and government

* Class, a group of people involved in a
class action A class action, also known as a class-action lawsuit, class suit, or representative action, is a type of lawsuit where one of the parties is a group of people who are represented collectively by a member or members of that group. The class actio ...
lawsuit *
Classes of United States senators The 100 seats in the United States Senate are divided into three classes for the purpose of determining which seats will be up for election in any two-year cycle, with only one class being up for election at a time. With senators being elected t ...
, for describing the schedules of elections for Senate seats


Transportation

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Class (locomotive) A class of locomotives is a group of locomotives built to a common design, typically for a single railroad or railway. Often members of a particular class had detail variations between individual examples, and these could lead to subclasses. Some ...
, a single design of a locomotive as assigned by the railroad *
Class rating In aviation, a class rating is an allowance to fly a certain group of aircraft that require training common to all aircraft within the group. A type rating is specified if a particular aircraft requires additional specialized training beyond the s ...
, an allowance to fly aircraft of similar design *Classification of United States railroads: **
Class I railroad In the United States, railroad carriers are designated as Class I, II, or III, according to annual revenue criteria originally set by the Surface Transportation Board in 1992. With annual adjustments for inflation, the 2019 thresholds were US$ ...
**
Class II railroad In the United States, railroad carriers are designated as Class I, II, or III, according to annual revenue criteria originally set by the Surface Transportation Board in 1992. With annual adjustments for inflation, the 2019 thresholds were US$5 ...
**
Class III railroad In the United States, railroad carriers are designated as Class I, II, or III, according to annual revenue criteria originally set by the Surface Transportation Board in 1992. With annual adjustments for inflation, the 2019 thresholds were US$5 ...
*
Ship class A ship class is a group of ships of a similar design. This is distinct from a ship type, which might reflect a similarity of tonnage or intended use. For example, is a nuclear aircraft carrier (ship type) of the (ship class). In the course ...
, a group of ships of similar design *
Travel class A travel class is a quality of accommodation on public transport. The accommodation could be a seat or a cabin for example. Higher travel classes are designed to be more comfortable and are typically more expensive. Airlines Traditionally ...
, a quality of accommodation on public transport *
Vehicle size class Vehicle size classes are series of ratings assigned to different segments of automotive vehicles for the purposes of vehicle emissions control and fuel economy calculation. Various methods are used to classify vehicles; in North America, passen ...
, a way of classifying cars


See also

*
CLASS (disambiguation) Class or The Class may refer to: Common uses not otherwise categorized * Class (biology), a taxonomic rank * Class (knowledge representation), a collection of individuals or objects * Class (philosophy), an analytical concept used differently ...
*
Klass (disambiguation) Klass is a Germanic surname. Notable people with the surname include: * Alisha Klass (born 1972), American pornographic actress * Christa Klaß / Christa Klass (born 1951), German politician * Craig Klass (born 1965), former water polo player * Da ...
{{disambiguation