ZF expression - definição. O que é ZF expression. Significado, conceito
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O que (quem) é ZF expression - definição

SYNTACTIC CONSTRUCT FOR CREATING A LIST BASED ON EXISTING LISTS
ZF expression; Parallel list comprehension; Parallel comprehension; Generator expression; Monad comprehension; List comprehensions; Array comprehension; Sequence comprehension; Python comprehension; Dictionary comprehension

ZF expression         
<programming> (After Zermelo Frankel set theory). {David Turner}'s name for list comprehension. (1995-03-27)
List comprehension         
A list comprehension is a syntactic construct available in some programming languages for creating a list based on existing lists. It follows the form of the mathematical set-builder notation (set comprehension) as distinct from the use of map and filter functions.
list comprehension         
<functional programming> An expression in a {functional language} denoting the results of some operation on (selected) elements of one or more lists. An example in Haskell: [ (x,y) | x <- [1 .. 6], y <- [1 .. x], x+y < 10] This returns all pairs of numbers (x,y) where x and y are elements of the list 1, 2, ..., 10, y <= x and their sum is less than 10. A list comprehension is simply "syntactic sugar" for a combination of applications of the functions, concat, map and filter. For instance the above example could be written: filter p (concat (map ( x -> map ( y -> (x,y)) [1..x]) [1..6])) where p (x,y) = x+y < 10 According to a note by Rishiyur Nikhil <nikhil@crl.dec.com>, (August 1992), the term itself seems to have been coined by Phil Wadler circa 1983-5, although the programming construct itself goes back much further (most likely Jack Schwartz and the SETL language). The term "list comprehension" appears in the references below. The earliest reference to the notation is in Rod Burstall and John Darlington's description of their language, NPL. David Turner subsequently adopted this notation in his languages SASL, KRC and Miranda, where he has called them "{ZF expressions}", set abstractions and list abstractions (in his 1985 FPCA paper [Miranda: A Non-Strict Functional Language with Polymorphic Types]). ["The OL Manual" Philip Wadler, Quentin Miller and Martin Raskovsky, probably 1983-1985]. ["How to Replace Failure by a List of Successes" FPCA September 1985, Nancy, France, pp. 113-146]. (1995-02-22)

Wikipédia

List comprehension

A list comprehension is a syntactic construct available in some programming languages for creating a list based on existing lists. It follows the form of the mathematical set-builder notation (set comprehension) as distinct from the use of map and filter functions.