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Virtual vs Functional - What's the difference?

virtual | functional |

In computing|lang=en terms the difference between virtual and functional

is that virtual is (computing) in c++, a virtual member function of a class while functional is (computing) an object encapsulating a function pointer (or equivalent).

As adjectives the difference between virtual and functional

is that virtual is in effect or essence, if not in fact or reality; imitated, simulated while functional is in good working order.

As nouns the difference between virtual and functional

is that virtual is (computing) in c++, a virtual member function of a class while functional is (mathematics) a function that takes a function as its argument; more precisely: a function y''=''f''(''x'') whose argument ''x varies in a space of (real valued, complex valued) functions and whose value belongs to a monodimensional space an example: the definite integration of integrable real functions in a real interval.

virtual

English

(wikipedia virtual)

Alternative forms

* vertual (obsolete) * vertuall (qualifier) * virtuall (obsolete)

Adjective

(-)
  • In effect or essence, if not in fact or reality; imitated, simulated.
    • In fact a defeat on the battlefield, Tet was a virtual victory for the North, owing to its effect on public opinion.
    Virtual addressing allows applications to believe that there is much more physical memory than actually exists.
  • * Fleming
    • A thing has a virtual existence when it has all the conditions necessary to its actual existence.
  • * De Quincey
    • to mask by slight differences in the manners a virtual identity in the substance
  • Having the power of acting or of invisible efficacy without the agency of the material or measurable part; potential.
  • * Francis Bacon
    • Heat and cold have a virtual transition, without communication of substance.
  • * Milton
    • Every kind that lives, / Fomented by his virtual power, and warmed.
  • Nearly, almost. (A relatively recent corruption of meaning, attributed to misuse in advertising and media. )
    • The angry peasants were a virtual army as they attacked the castle.
  • * 2012 , Chelsea 6-0 Wolves [http://www.bbc.co.uk/sport/0/football/19632463]
    • The Chelsea captain was a virtual spectator as he was treated to his side's biggest win for almost two years as Stamford Bridge serenaded him with chants of "there's only one England captain," some 48 hours after he announced his retirement from international football.
  • Simulated in a computer or online.
    • The virtual world of his computer game allowed character interaction.
  • Operating by computer or in cyberspace; not physically present.
    • a virtual''' assistant; a '''virtual personal trainer
  • (computing, object-oriented programming, of a class member) Capable of being overridden with a different implementation in a subclass.
  • (physics) Pertaining to particles in temporary existence due to the Heisenberg uncertainty principle.

    • Synonyms

    * de facto

    Antonyms

    * de jure * legal * real

    Derived terms

    * virtual reality * virtually

    Noun

    (en noun)
  • (computing) In C++, a virtual member function of a class.
    • ----

    functional

    English

    Adjective

    (en adjective)
  • In good working order.
  • Useful; serving a purpose, fulfilling a function
    • That sculpture is not merely artistic, but also functional : it can be used as a hatrack.
  • Only for functional purposes, notably in architecture
    • ''A functional construction element generally must meet higher technical but lower aesthetical requirements
  • (computing theory) Having semantics defined purely in terms of mathematical functions, without side-effects.
  • (medicine) Of a disease, such that its symptoms cannot be referred to any appreciable lesion or change of structure; opposed to organic disease, in which the organ itself is affected.

    • Synonyms

    * functioning, working * utilitarian

    Antonyms

    * non-functional * dysfunctional * organic

    Derived terms

    (Derived terms) * function * functional analysis * functional analysis diagram * functional anatomy * functional application * functional bombing * functional constraint * functional decomposition * functional design * functional diagram * functional disorder * functional electrical stimulation * functional error recovery * functional failure * functional group * functional interleaving * functional programming * functional requirement * functional residual capacity * functional specifications * functional switching circuit * functional unit * functionality * functionally

    Related terms

    * functionary

    Noun

    (en noun)
  • (mathematics) A function that takes a function as its argument; More precisely: A function y''=''f''(''x'') whose argument ''x varies in a space of (real valued, complex valued) functions and whose value belongs to a monodimensional space. An example: the definite integration of integrable real functions in a real interval.
  • (mathematics, functional analysis) A scalar-valued linear function on a vector space
  • (computing) An object encapsulating a function pointer (or equivalent).

    • External links

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