Bruno P. Kinoshita created FUNCTOR-24:
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Summary: Change default arity of Function, Procedure and Predicate
Key: FUNCTOR-24
URL: https://issues.apache.org/jira/browse/FUNCTOR-24
Project: Commons Functor
Issue Type: Improvement
Reporter: Bruno P. Kinoshita
Assignee: Bruno P. Kinoshita
Priority: Minor
>From http://markmail.org/message/ion6fk6hroh5zmzn
Java 8 (project lambda) [1] and Google Guava [2] have a default arity of 1 for
these interfaces (i.e. Function is a unary function). But in [functor] the
default arity is 0 (i.e. nullary).
It would be a good idea for [functor] to have a similar behaviour to the other
API's, so users and developers can use the interfaces with less hassle.
Other functional programming languages let the user specify the arity when
declaring the function (like in Haskell), but in [functor] we have special
interfaces per arity.
[1]
http://docs.guava-libraries.googlecode.com/git/javadoc/com/google/common/base/Function.html#apply(F)
[2]
http://docs.guava-libraries.googlecode.com/git/javadoc/com/google/common/base/Function.html#apply(F)
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