different between function vs vtable

English

Etymology

From Middle French function, from Old French fonction, from Latin functi? (“performance, execution”), from functus, perfect participle of fungor (“to perform, execute, discharge”).

Pronunciation

• (UK) IPA^(key): /?f??(k)??n/, /?f??k?n?/
• (US) IPA^(key): /?f??k??n/, [?f??k???n], [?f??k?n?]
• Hyphenation: func?tion
• Rhymes: -??k??n

Noun

function (plural functions)

1. What something does or is used for.

   Synonyms: aim, intention, purpose, role, use

2. A professional or official position.

   Synonyms: occupation, office, part, role

4. An official or social occasion.

   Synonyms: affair, occasion, social occasion, social function

5. Something which is dependent on or stems from another thing; a result or concomitant.
6. A relation where one thing is dependent on another for its existence, value, or significance.
7. (mathematics) A relation in which each element of the domain is associated with exactly one element of the codomain.

   Synonyms: map, mapping, mathematical function, operator, transformation

   Hypernym: relation

8. (computing) A routine that receives zero or more arguments and may return a result.

   Synonyms: procedure, routine, subprogram, subroutine, func, funct

9. (biology) The physiological activity of an organ or body part.
10. (chemistry) The characteristic behavior of a chemical compound.
11. (anthropology) The role of a social practice in the continued existence of the group.

Hyponyms

• subfunction

Derived terms

Related terms

Translations

References

• function on Wikipedia.Wikipedia

Verb

function (third-person singular simple present functions, present participle functioning, simple past and past participle functioned)

1. (intransitive) To have a function.

   Synonyms: officiate, serve

2. (intransitive) To carry out a function; to be in action.

   Synonyms: go, operate, run, work

   Antonym: malfunction

Related terms

• functional
• dysfunction, dysfunctional

Translations

Middle French

Noun

function f (plural functions)

1. function (what something's intended use is)

Descendants

• ? English: function
• French: fonction

English

Etymology

Shortening of virtual method table or virtual function table.

Pronunciation

• (UK) IPA^(key): /?vi?te?b?l/
• Rhymes: -e?b?l

Noun

vtable (plural vtables)

1. (computing, programming) A table of memory pointers to different implementations of a virtual function.
   • 2000, Robert C. Martin, More C++ gems

     This solution allows the Command executor to iterate through a collection of unrelated objects with no vtables and pick out the right method for each one.

   • 2003, John C. Mitchell, Concepts in programming languages

     Note that nonvirtual functions do not appear in a vtable.

   • 2003, Steve Heller, C++: a dialogue: programming with the C++ standard library

     The most likely result will be a crash when the code tries to use a vtable entry that contains random garbage.