partial function

[PAR-shul FUNK-shun]
nounpl: partial functions
função parcial
1. In mathematics and computer science, a function that is not defined for all possible inputs in its domain, but only for a subset of them.
The square root function is a partial function on real numbers because it is not defined for negative inputs.
A função raiz quadrada é uma função parcial nos números reais porque não é definida para entradas negativas.
2. In functional programming, a technique of fixing some arguments of a function to create a new function with fewer parameters.
Using partial function application, we can create a multiply-by-2 function from a general multiplication function.
Usando aplicação de função parcial, podemos criar uma função de multiplicação por 2 a partir de uma função de multiplicação geral.
This is primarily technical terminology used in mathematics and computer science education in both Brazil and Portugal. The term is identical in both Portuguese-speaking regions and is increasingly important in modern programming paradigms, particularly in functional programming languages like Haskell and Scala.
Synonyms / Sinônimos
partial mappingpartial mapincomplete function
Antonyms / Antônimos
total functioncomplete function

Regional Variations

General Brazilian
função parcial
Standard term used in mathematics and computer science education
Portugal
função parcial
Same as Brazilian Portuguese; universal in mathematical contexts
Academic/Technical
aplicação parcial de função
Used specifically in functional programming contexts for partial application

Related Words

functiondomaincodomainundefinedcurryingfunction application

Related Idioms & Phrases

partial function application
undefined for some inputs
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