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## functor

### Examples

• Applicative functors are functors with some extra properties, the most important one is that it allows you to apply functions inside the functor (hence the name) to other values. an applicative functor out of every monad, and then we'll see an example of an applicative functor that is. — “Haskell/Applicative Functors - Wikibooks, collection of open”,
• However, as I strongly believe in the sharing of information, I publish it here so Studies: a section that documents my studies for computer science at. — “KennyWiki”, functor.be
• functor. Given two categories $\mathcal{C}$ and $\mathcal{D}$ , a covariant functor $T:\mathcal{C}\to\mathcal{D}$ consists of an assignment for each object $X$ of $\mathcal{C}$ an object $T A contravariant functor$T :\mathcal{C}\to\mathcal{D}$is just a covariant functor$T:\mathcal{C}^{\rm op}\to. — “PlanetMath: functor”,
• The pass-through filter makes a client believe that they are using the real object without having to explicitly call a functor. What you should be able to see is that a functor allows the original functionality to be kept intact, and additional functionality to be attached dynamically. — “C# Coding Solutions—Understanding and Using Functors at C#”, en.csharp-
• An -place functor from categories into that is covariant in the 1) The identity mapping of a category onto itself is a covariant functor, called the identity functor of the category and denoted by or. — “Springer Online Reference Works”,
• Note that one can also define a contravariant functor as a covariant functor on the dual category Cop.[4] Some authors prefer to write all Every functor induces an opposite functor .[5] By definition, Fop maps objects and. — “Functor - Wikipedia, the free encyclopedia”,
• functor n. One that performs an operation or a function. Grammar . See function word . [New Latin, from Latin fūnctiō , performance, function. — “functor: Definition from ”,
• Functor. In category theory, a branch of mathematics, a functor is a special type of mapping between categories. Functors can be thought of as homomorphisms between categories, or morphisms in the category of small categories. The word functor was borrowed by mathematicians from the philosopher. — “Functor”,
• Functor definition, that which functions. See more. In category theory, a functor F is an operator on types. F is also considered to be a polymorphic operator on. — “Functor | Define Functor at ”,
• In category theory, a functor is a map between categories satisfying For example, given a problem about topological spaces, one might apply some functor (say, taking the homology groups), and obtain an equivalent problem about vector. — “Functor - Conservapedia”,
• A Function Object, or Functor (the two terms are synonymous) is simply any object that can be called as if it is a function. All other function object concepts defined by the STL are refinements of these three. — “Function Objects”,
• Functor is a math/scientific software, for graphical ***yze of 3D algebraic functions Z = f(X, Y). The software uses OpenGL hardware acceleration if available. Supports perspective and ortho projection methods; Wire frame, web, solid and texture. — “Functor - free download. algebra, drawing”,
• Encyclopedia article about functor. Information about functor in the Columbia Encyclopedia, Computer Desktop Encyclopedia, computing dictionary. — “functor definition of functor in the Free Online Encyclopedia”, encyclopedia2
• Functor provides pattern-based function and method dispatch for Ruby, originally inspired by Topher Cyll s multi gem. class Repeater attr_accessor :times include Functor::Method functor( :repeat, Integer ) { |x| x * @times } functor( :repeat, String ) { |s| [].fill( s, 0..@times ).join(' ') } end r. — “RDoc Documentation”,
• (mathematics) a structure-preserving mapping between categories: if F is a functor from category C to category D, then F maps objects of C to objects of D and arrows of C to arrows of D such that any arrow f:XY of C is mapped to an arrow F(f). — “functor - Wiktionary”,
• Functor provides pattern-based function and method dispatch for Ruby, originally inspired by Topher Cyll's multi gem. To (partially) alleviate the performance hit, Functor keeps track of which functor block matches each particular *args set,. — “waves's functor at master - GitHub”,
• Definition of functor in the Online Dictionary. Meaning of functor. Pronunciation of functor. Translations of functor. functor synonyms, functor antonyms. Information about functor in the free online English dictionary and encyclopedia. — “functor - definition of functor by the Free Online Dictionary”,
• Listen to free music played by functor. Search for free music to stream. Create your own free internet radio station. — “Free Music | Listen to Music Online | functor - Blip.fm”, blip.fm
• A functor, or function object, is a class in C++ with the () operator overloaded. Functors are used a lot in the standard library to do custom comp. — “Urban Dictionary: functor”,
• A functor is a function that can be manipulated as an object, or an object representing a single, generic function. The root functor package defines three signatures for each functor type--taking zero, one or two Object arguments. — “Commons Functor - Overview”,
• Definition of functor from Webster's New World College Dictionary. Meaning of functor. Pronunciation of functor. Definition of the word functor. Origin of the word functor. — “functor - Definition of functor at ”,
• :For functors in computer science, see Function object. For functors in linguistics see Function word.In category theory, a branch of mathematics, a functor is a special type of mapping between categories. Functors can be thought of as morphisms. — “Functor | ”,
• In fact the semantics are identical with the exception that the Functor Pattern additionally provides a mechanism to return values (or re-throw exceptions) to the Submitter (using Java 5+ Futures) where as the Command Pattern does not provide such capabilities. — “Functor Pattern - The Coherence Incubator - Oracle Coherence”,