duck typing
<programming> A term coined by Dave Thomas for a kind of dynamic typing
typical of some programming languages, such as Smalltalk, Ruby or Visual FoxPro,
where a variable's run-time value determines the operations that can be
performed on it.
The term comes from the "duck test": if it walks like a duck and quacks like a
duck, it must be a duck.
Duck typing considers the methods to which a value responds and the attributes
it posesses rather than its relationship to a type hierarchy. This encourages
greater polymorphism because types are enforced as late as possible.
http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/100511.
(2006-09-13)
Nearby terms:
dual ported « dual-stack « Dual Tone Multi Frequency
«
duck typing » DUEL » Duff's device » dumbed down
|
