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67-587: (Redirected from Controls ) [REDACTED] Look up -controlled , control , controlled , or controlling in Wiktionary, the free dictionary. [REDACTED] Wikiquote has quotations related to Control . Control may refer to: Basic meanings [ edit ] Economics and business [ edit ] Control (management) , an element of management Control, an element of management accounting Comptroller (or controller),

134-532: A server ) should loop forever, handling events as they occur, only stopping when the process is terminated by an operator. Infinite loops can be implemented using other control flow constructs. Most commonly, in unstructured programming this is jump back up (goto), while in structured programming this is an indefinite loop (while loop) set to never end, either by omitting the condition or explicitly setting it to true, as while (true) ... . Some languages have special constructs for infinite loops, typically by omitting

201-410: A 1987 made-for-television film starring Burt Lancaster Control (2004 film) , starring Ray Liotta, Willem Dafoe and Michelle Rodriguez Control (2007 film) , a film about Joy Division singer Ian Curtis, directed by Anton Corbijn Control (2013 film) , a Chinese–Hong Kong film written and directed by Kenneth Bi Control (2023 film) , a British film directed by Gene Fallaize and featuring

268-410: A 1987 made-for-television film starring Burt Lancaster Control (2004 film) , starring Ray Liotta, Willem Dafoe and Michelle Rodriguez Control (2007 film) , a film about Joy Division singer Ian Curtis, directed by Anton Corbijn Control (2013 film) , a Chinese–Hong Kong film written and directed by Kenneth Bi Control (2023 film) , a British film directed by Gene Fallaize and featuring

335-964: A 2011 album by Abandon Control , a 2014 album by The Brew Control , a 1981 album by Conrad Schnitzler Control , a 2013 EP by Disclosure Control , a 1994 album by Hellnation Control , a 2012 EP by The Indecent Control , a 1971 album by John St Field Control , a 2012 album by Uppermost Control , a 2003 album by Where Fear and Weapons Meet Ctrl (SZA album) , 2017 Songs [ edit ] "Control" (Big Sean song) , 2013 "Control" (Garbage song) , 2012 "Control" (Janet Jackson song) , 1986 "Control" (Kid Sister song) , 2007 "Control" (Matrix & Futurebound song) , 2013 "Control" (Metro Station song) , 2007 "Control" (Mutemath song) , 2004 "Control" (Poe song) , 1998 "Control" (Puddle of Mudd song) , 2001 "Control" (Traci Lords song) , 1994 "Control" (Zoe Wees song) , 2020 "Control", by Basement from Colourmeinkindness , 2012 "Control", by

402-964: A 2011 album by Abandon Control , a 2014 album by The Brew Control , a 1981 album by Conrad Schnitzler Control , a 2013 EP by Disclosure Control , a 1994 album by Hellnation Control , a 2012 EP by The Indecent Control , a 1971 album by John St Field Control , a 2012 album by Uppermost Control , a 2003 album by Where Fear and Weapons Meet Ctrl (SZA album) , 2017 Songs [ edit ] "Control" (Big Sean song) , 2013 "Control" (Garbage song) , 2012 "Control" (Janet Jackson song) , 1986 "Control" (Kid Sister song) , 2007 "Control" (Matrix & Futurebound song) , 2013 "Control" (Metro Station song) , 2007 "Control" (Mutemath song) , 2004 "Control" (Poe song) , 1998 "Control" (Puddle of Mudd song) , 2001 "Control" (Traci Lords song) , 1994 "Control" (Zoe Wees song) , 2020 "Control", by Basement from Colourmeinkindness , 2012 "Control", by

469-702: A Beautiful Thing , 2017 "Control", by Playboi Carti from Whole Lotta Red , 2020 "Control", by Poe from Haunted , 2000 "Control", by Stabbing Westward from Ungod , 1994 "Control", by Wisin from El Regreso del Sobreviviente , 2014 "Control (Somehow You Want Me)", by Tenth Avenue North from Followers , 2016 See also [ edit ] Action (disambiguation) Control point (disambiguation) Control unit (disambiguation) Controller (disambiguation) Damage control (disambiguation) Uncontrolled (disambiguation) All pages with titles beginning with Control All pages with titles containing Control Topics referred to by

536-702: A Beautiful Thing , 2017 "Control", by Playboi Carti from Whole Lotta Red , 2020 "Control", by Poe from Haunted , 2000 "Control", by Stabbing Westward from Ungod , 1994 "Control", by Wisin from El Regreso del Sobreviviente , 2014 "Control (Somehow You Want Me)", by Tenth Avenue North from Followers , 2016 See also [ edit ] Action (disambiguation) Control point (disambiguation) Control unit (disambiguation) Controller (disambiguation) Damage control (disambiguation) Uncontrolled (disambiguation) All pages with titles beginning with Control All pages with titles containing Control Topics referred to by

603-470: A computer keyboard GUI widget (control or widget), a component of a graphical user interface Input device (control), a physical user interface to a computer system Society, psychology and sociology [ edit ] Control (psychology) Locus of control , an extent to which individuals believe that they can control events that affect them Self-control , the ability to control one's emotions and desires Power (social and political) ,

670-470: A computer keyboard GUI widget (control or widget), a component of a graphical user interface Input device (control), a physical user interface to a computer system Society, psychology and sociology [ edit ] Control (psychology) Locus of control , an extent to which individuals believe that they can control events that affect them Self-control , the ability to control one's emotions and desires Power (social and political) ,

737-404: A controllable system of state variables toward a desired goal Controlling for a variable in statistics Scientific control , an experiment in which "confounding variables" are minimised to reduce error Control variables , variables which are kept constant during an experiment Biological pest control , a natural method of controlling pests Control network in geodesy and surveying,

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804-404: A controllable system of state variables toward a desired goal Controlling for a variable in statistics Scientific control , an experiment in which "confounding variables" are minimised to reduce error Control variables , variables which are kept constant during an experiment Biological pest control , a natural method of controlling pests Control network in geodesy and surveying,

871-402: A desire to skip the remainder of the loop body and continue with the next iteration of the loop. Some languages provide a statement such as continue (most languages), skip , cycle (Fortran), or next (Perl and Ruby), which will do this. The effect is to prematurely terminate the innermost loop body and then resume as normal with the next iteration. If the iteration is the last one in

938-406: A discipline of modeling and controlling of systems Control system , the ability to control some mechanical or chemical equipment Control theory , the mathematical theory about controlling dynamical systems over time Control flow , means of specifying the sequence of operations in computer programs Control variables in programming, which regulate the flow of control Control key , on

1005-406: A discipline of modeling and controlling of systems Control system , the ability to control some mechanical or chemical equipment Control theory , the mathematical theory about controlling dynamical systems over time Control flow , means of specifying the sequence of operations in computer programs Control variables in programming, which regulate the flow of control Control key , on

1072-431: A final keyword. Conditional expressions and conditional constructs are features of a programming language that perform different computations or actions depending on whether a programmer-specified Boolean condition evaluates to true or false. Less common variations include: Switch statements (or case statements , or multiway branches ) compare a given value with specified constants and take action according to

1139-509: A multilevel break or continue – this was proposed in PEP 3136 , and rejected on the basis that the added complexity was not worth the rare legitimate use. The notion of multi-level breaks is of some interest in theoretical computer science , because it gives rise to what is today called the Kosaraju hierarchy . In 1973 S. Rao Kosaraju refined the structured program theorem by proving that it

1206-439: A recurring character in the sketch programme A Bit of Fry & Laurie Control, a character on the science fiction crime drama Person of Interest [C] - The Money of Soul And Possibility Control , or [C] - Control , a 2011 anime Ctrl (web series) , an American comedy web series CONTROL ( Get Smart ) , a fictional counter-espionage agency Games [ edit ] Control and control-bid , features of

1273-439: A recurring character in the sketch programme A Bit of Fry & Laurie Control, a character on the science fiction crime drama Person of Interest [C] - The Money of Soul And Possibility Control , or [C] - Control , a 2011 anime Ctrl (web series) , an American comedy web series CONTROL ( Get Smart ) , a fictional counter-espionage agency Games [ edit ] Control and control-bid , features of

1340-423: A relation between elements of two clauses Geography [ edit ] Control, Alberta Media [ edit ] Books [ edit ] Control (novel) , a 1982 novel by William Goldman Control (fictional character) , in the 1974 British spy novel Tinker, Tailor, Soldier, Spy Film and TV [ edit ] Films [ edit ] Control (1987 film) or Il Giorno prima ,

1407-423: A relation between elements of two clauses Geography [ edit ] Control, Alberta Media [ edit ] Books [ edit ] Control (novel) , a 1982 novel by William Goldman Control (fictional character) , in the 1974 British spy novel Tinker, Tailor, Soldier, Spy Film and TV [ edit ] Films [ edit ] Control (1987 film) or Il Giorno prima ,

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1474-404: A senior financial officer in an organization Controlling interest , a percentage of voting stock shares sufficient to prevent opposition Foreign exchange controls , regulations on trade Internal control , a process to help achieve specific goals typically related to managing risk Mathematics and science [ edit ] Control (optimal control theory) , a variable for steering

1541-404: A senior financial officer in an organization Controlling interest , a percentage of voting stock shares sufficient to prevent opposition Foreign exchange controls , regulations on trade Internal control , a process to help achieve specific goals typically related to managing risk Mathematics and science [ edit ] Control (optimal control theory) , a variable for steering

1608-607: A set of reference points of known geospatial coordinates Control room , a room where a physical facility can be monitored Process control in continuous production processes Security controls , safeguards against security risks Medicine [ edit ] Control, according to the ICD-10-PCS , in the Medical and Surgical Section (0), is the root operation (# 3) that means stopping, or attempting to stop, post-procedural bleeding Chlordiazepoxide , also sold under

1675-494: A set of reference points of known geospatial coordinates Control room , a room where a physical facility can be monitored Process control in continuous production processes Security controls , safeguards against security risks Medicine [ edit ] Control, according to the ICD-10-PCS , in the Medical and Surgical Section (0), is the root operation (# 3) that means stopping, or attempting to stop, post-procedural bleeding Chlordiazepoxide , also sold under

1742-457: A set or collection. Scala has for-expressions , which generalise collection-controlled loops, and also support other uses, such as asynchronous programming . Haskell has do-expressions and comprehensions, which together provide similar function to for-expressions in Scala. General iteration constructs such as C's for statement and Common Lisp 's do form can be used to express any of

1809-401: A state variable which is tested to break out another level; exceptions, which are caught at the level being broken out to; placing the nested loops in a function and using return to effect termination of the entire nested loop; or using a label and a goto statement. C does not include a multilevel break, and the usual alternative is to use a goto to implement a labeled break. Python does not have

1876-493: A statement without disrupting the control flow. In other words, they were composable . (Later developments, such as non-strict programming languages – and more recently, composable software transactions – have continued this strategy, making components of programs even more freely composable.) Some academics took a purist approach to the Böhm–Jacopini result and argued that even instructions like break and return from

1943-412: Is an explicit name or number assigned to a fixed position within the source code , and which may be referenced by control flow statements appearing elsewhere in the source code. A label marks a position within source code and has no other effect. Line numbers are an alternative to a named label used in some languages (such as BASIC ). They are whole numbers placed at the start of each line of text in

2010-676: Is at the start, the body may be skipped completely; if it is at the end, the body is always executed at least once. A control break is a value change detection method used within ordinary loops to trigger processing for groups of values. Values are monitored within the loop and a change diverts program flow to the handling of the group event associated with them. Several programming languages (e.g., Ada , D , C++11 , Smalltalk , PHP , Perl , Object Pascal , Java , C# , MATLAB , Visual Basic , Ruby , Python , JavaScript , Fortran 95 and later) have special constructs which allow implicit looping through all elements of an array, or all members of

2077-614: Is different from Wikidata All article disambiguation pages All disambiguation pages control [REDACTED] Look up -controlled , control , controlled , or controlling in Wiktionary, the free dictionary. [REDACTED] Wikiquote has quotations related to Control . Control may refer to: Basic meanings [ edit ] Economics and business [ edit ] Control (management) , an element of management Control, an element of management accounting Comptroller (or controller),

Control - Misplaced Pages Continue

2144-494: Is different from Wikidata All article disambiguation pages All disambiguation pages Control variable (programming) Within an imperative programming language , a control flow statement is a statement that results in a choice being made as to which of two or more paths to follow. For non-strict functional languages, functions and language constructs exist to achieve the same result, but they are usually not termed control flow statements. A set of statements

2211-477: Is found. Some programming languages provide a statement such as break (most languages), Exit (Visual Basic), or last (Perl), which effect is to terminate the current loop immediately, and transfer control to the statement immediately after that loop. Another term for early-exit loops is loop-and-a-half . The following example is done in Ada which supports both early exit from loops and loops with test in

2278-402: Is in turn generally structured as a block , which in addition to grouping, also defines a lexical scope . Interrupts and signals are low-level mechanisms that can alter the flow of control in a way similar to a subroutine , but usually occur as a response to some external stimulus or event (that can occur asynchronously ), rather than execution of an in-line control flow statement. At

2345-553: Is met, or indefinitely . When one of those items is itself also a loop, it is called a "nested loop". In functional programming languages, such as Haskell and Scheme , both recursive and iterative processes are expressed with tail recursive procedures instead of looping constructs that are syntactic. Most programming languages have constructions for repeating a loop a certain number of times. In most cases counting can go downwards instead of upwards and step sizes other than 1 can be used. In these examples, if N < 1 then

2412-466: Is possible to avoid adding additional variables in structured programming, as long as arbitrary-depth, multi-level breaks from loops are allowed. Furthermore, Kosaraju proved that a strict hierarchy of programs exists: for every integer n , there exists a program containing a multi-level break of depth n that cannot be rewritten as a program with multi-level breaks of depth less than n without introducing added variables. One can also return out of

2479-580: The keyword may either be in upper or lower case depending on the language, it is usually written as: The effect of a goto statement is to cause the next statement to be executed to be the statement appearing at (or immediately after) the indicated label. Goto statements have been considered harmful by many computer scientists, notably Dijkstra . The terminology for subroutines varies; they may alternatively be known as routines, procedures, functions (especially if they return results) or methods (especially if they belong to classes or type classes ). In

2546-479: The 1950s, computer memories were very small by current standards so subroutines were used mainly to reduce program size. A piece of code was written once and then used many times from various other places in a program. Today, subroutines are more often used to help make a program more structured, e.g., by isolating some algorithm or hiding some data access method. If many programmers are working on one program, subroutines are one kind of modularity that can help divide

2613-620: The Black Dahlia Murder from Everblack , 2013 "Control", by Delta Goodrem from Child of the Universe , 2012 "Control", by Disclosure from The Face , 2012 "Control", by División Minúscula , 2008 "Control", by Doja Cat from Purrr! , 2014 "Control", by Earshot from Two , 2004 "Control", by Feder , 2018 "Control", by Ghost9 from Now: Who We Are Facing, 2021 "Control", by Halsey from Badlands , 2015 "Control", by London Grammar from Truth Is

2680-493: The Black Dahlia Murder from Everblack , 2013 "Control", by Delta Goodrem from Child of the Universe , 2012 "Control", by Disclosure from The Face , 2012 "Control", by División Minúscula , 2008 "Control", by Doja Cat from Purrr! , 2014 "Control", by Earshot from Two , 2004 "Control", by Feder , 2018 "Control", by Ghost9 from Now: Who We Are Facing, 2021 "Control", by Halsey from Badlands , 2015 "Control", by London Grammar from Truth Is

2747-477: The Pascal-provided control structures, the correct solution was given by only 20% of the subjects, while no subject wrote incorrect code for this problem if allowed to write a return from the middle of a loop. Most programming languages with control structures have an initial keyword which indicates the type of control structure involved. Languages then divide as to whether or not control structures have

Control - Misplaced Pages Continue

2814-452: The ability to control others Social control , mechanisms that regulate social behavior Controlling behavior in relationships Control freak , a person who attempts to dictate Mind control , the use of manipulative methods to persuade others Civilian control of the military Other basic uses [ edit ] Control point (orienteering) , a marked waypoint in orienteering and related sports Control (linguistics) ,

2881-452: The ability to control others Social control , mechanisms that regulate social behavior Controlling behavior in relationships Control freak , a person who attempts to dictate Mind control , the use of manipulative methods to persuade others Civilian control of the military Other basic uses [ edit ] Control point (orienteering) , a marked waypoint in orienteering and related sports Control (linguistics) ,

2948-704: The above example is linked to the for statement, and not the inner if statement. Both Python's for and while loops support such an else clause, which is executed only if early exit of the loop has not occurred. Some languages support breaking out of nested loops; in theory circles, these are called multi-level breaks. One common use example is searching a multi-dimensional table. This can be done either via multilevel breaks (break out of N levels), as in bash and PHP, or via labeled breaks (break out and continue at given label), as in Go, Java and Perl. Alternatives to multilevel breaks include single breaks, together with

3015-450: The above sorts of loops, and others, such as looping over some number of collections in parallel. Where a more specific looping construct can be used, it is usually preferred over the general iteration construct, since it often makes the purpose of the expression clearer. Infinite loops are used to assure a program segment loops forever or until an exceptional condition arises, such as an error. For instance, an event-driven program (such as

3082-614: The addition of Boolean variables (true/false flags). Later authors showed that choice can be replaced by loops (and yet more Boolean variables). That such minimalism is possible does not mean that it is necessarily desirable; computers theoretically need only one machine instruction (subtract one number from another and branch if the result is negative), but practical computers have dozens or even hundreds of machine instructions. Other research showed that control structures with one entry and one exit were much easier to understand than any other form, mainly because they could be used anywhere as

3149-436: The body of loop may execute once (with I having value 1) or not at all, depending on the programming language. In many programming languages, only integers can be reliably used in a count-controlled loop. Floating-point numbers are represented imprecisely due to hardware constraints, so a loop such as might be repeated 9 or 10 times, depending on rounding errors and/or the hardware and/or the compiler version. Furthermore, if

3216-400: The condition from an indefinite loop. Examples include Ada ( loop ... end loop ), Fortran ( DO ... END DO ), Go ( for { ... } ), and Ruby ( loop do ... end ). Often, an infinite loop is unintentionally created by a programming error in a condition-controlled loop, wherein the loop condition uses variables that never change within the loop. Sometimes within the body of a loop there is

3283-487: The default case as a glob matching any string. Case logic can also be implemented in functional form, as in SQL 's decode statement. A loop is a sequence of statements which is specified once but which may be carried out several times in succession. The code "inside" the loop (the body of the loop, shown below as xxx ) is obeyed a specified number of times, or once for each of a collection of items, or until some condition

3350-404: The first constant to match. There is usually a provision for a default action ("else", "otherwise") to be taken if no match succeeds. Switch statements can allow compiler optimizations, such as lookup tables . In dynamic languages , the cases may not be limited to constant expressions, and might extend to pattern matching , as in the shell script example on the right, where the *) implements

3417-454: The following statement), but few if any other ALGOL variants allowed whole numbers. Early Fortran compilers only allowed whole numbers as labels. Beginning with Fortran-90, alphanumeric labels have also been allowed. The goto statement (a combination of the English words go and to , and pronounced accordingly) is the most basic form of unconditional transfer of control. Although

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3484-454: The game contract bridge Control (video game) , a 2019 video game by Remedy Entertainment Music [ edit ] Kontrol - a Bulgarian punk band Control ( Starlight Express ) , a character from the rock musical Albums [ edit ] Control (GoodBooks album) , 2007 Control (Janet Jackson album) , 1986 Control (Pedro the Lion album) , 2002 Control ,

3551-403: The game contract bridge Control (video game) , a 2019 video game by Remedy Entertainment Music [ edit ] Kontrol - a Bulgarian punk band Control ( Starlight Express ) , a character from the rock musical Albums [ edit ] Control (GoodBooks album) , 2007 Control (Janet Jackson album) , 1986 Control (Pedro the Lion album) , 2002 Control ,

3618-404: The increment of X occurs by repeated addition, accumulated rounding errors may mean that the value of X in each iteration can differ quite significantly from the expected sequence 0.1, 0.2, 0.3, ..., 1.0. Most programming languages have constructions for repeating a loop until some condition changes. Some variations test the condition at the start of the loop; others test it at the end. If the test

3685-422: The level of machine language or assembly language , control flow instructions usually work by altering the program counter . For some central processing units (CPUs), the only control flow instructions available are conditional or unconditional branch instructions, also termed jumps. The kinds of control flow statements supported by different languages vary, but can be categorized by their effect: A label

3752-402: The loop, the effect is to terminate the entire loop early. Some languages, like Perl and Ruby, have a redo statement that restarts the current iteration from the start. Ruby has a retry statement that restarts the entire loop from the initial iteration. When using a count-controlled loop to search through a table, it might be desirable to stop searching as soon as the required item

3819-429: The middle . Both features are very similar and comparing both code snippets will show the difference: early exit must be combined with an if statement while a condition in the middle is a self-contained construct. Python supports conditional execution of code depending on whether a loop was exited early (with a break statement) or not by using an else-clause with the loop. For example, The else clause in

3886-456: The middle of loops are bad practice as they are not needed in the Böhm–Jacopini proof, and thus they advocated that all loops should have a single exit point. This purist approach is embodied in the language Pascal (designed in 1968–1969), which up to the mid-1990s was the preferred tool for teaching introductory programming in academia. The direct application of the Böhm–Jacopini theorem may result in additional local variables being introduced in

3953-458: The same term [REDACTED] This disambiguation page lists articles associated with the title Control . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Control&oldid=1251821825 " Category : Disambiguation pages Hidden categories: Articles containing Italian-language text Short description

4020-458: The same term [REDACTED] This disambiguation page lists articles associated with the title Control . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Control&oldid=1251821825 " Category : Disambiguation pages Hidden categories: Articles containing Italian-language text Short description

4087-592: The source code. Languages which use these often impose the constraint that the line numbers must increase in value in each following line, but may not require that they be consecutive. For example, in BASIC: In other languages such as C and Ada , a label is an identifier , usually appearing at the start of a line and immediately followed by a colon. For example, in C: The language ALGOL 60 allowed both whole numbers and identifiers as labels (both linked by colons to

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4154-471: The structured chart, and may also result in some code duplication . Pascal is affected by both of these problems and according to empirical studies cited by Eric S. Roberts , student programmers had difficulty formulating correct solutions in Pascal for several simple problems, including writing a function for searching an element in an array. A 1980 study by Henry Shapiro cited by Roberts found that using only

4221-545: The trade name Control Lorazepam , sold under the trade name Control Systems engineering, computing and technology [ edit ] Automatic control , the application of control theory for regulation of processes without direct intervention Control character , or non-printing character, in a character set; does not represent a written symbol, but is used to control the interpretation or display of text Unicode control characters , characters with no visual or spatial representation Control engineering ,

4288-545: The trade name Control Lorazepam , sold under the trade name Control Systems engineering, computing and technology [ edit ] Automatic control , the application of control theory for regulation of processes without direct intervention Control character , or non-printing character, in a character set; does not represent a written symbol, but is used to control the interpretation or display of text Unicode control characters , characters with no visual or spatial representation Control engineering ,

4355-476: The voice of Kevin Spacey Control (upcoming film) , directed by Robert Schwentke and starring James McAvoy Kontroll , a 2003 Hungarian film, released as Control internationally Control , a UK comedy short by Frank Miller TV [ edit ] Control ( House ) , a 2005 episode of the television series House Control , a Spanish-language series aired on Univision Control,

4422-412: The voice of Kevin Spacey Control (upcoming film) , directed by Robert Schwentke and starring James McAvoy Kontroll , a 2003 Hungarian film, released as Control internationally Control , a UK comedy short by Frank Miller TV [ edit ] Control ( House ) , a 2005 episode of the television series House Control , a Spanish-language series aired on Univision Control,

4489-619: The work. In structured programming, the ordered sequencing of successive commands is considered one of the basic control structures, which is used as a building block for programs alongside iteration, recursion and choice. In May 1966, Böhm and Jacopini published an article in Communications of the ACM which showed that any program with goto s could be transformed into a goto-free form involving only choice (IF THEN ELSE) and loops (WHILE condition DO xxx), possibly with duplicated code and/or

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