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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Functor
is always a great word to know.
So is phrase structure tree. Does it mean:
| one of the alternate contextually determined phonological shapes of a morpheme; ox, oxen |
| a structural representation of a sentence in the form of an inverted tree, with each node of the tree labeled according to the phrasal constituent it represents |
FOLDOC
Computing Dictionary
functor definition
In category theory, a functor F is an operator on types. F is also considered to be a polymorphic operator on functions with the type
F : (a -> b) -> (F a -> F b).
Functors are a generalisation of the function "map". The type operator in this case takes a type T and returns type "list of T". The map function takes a function and applies it to each element of a list.
(1995-02-07)
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