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Qu'est-ce (qui) est duck typing - définition

STYLE OF DYNAMIC TYPING IN OBJECT-ORIENTED PROGRAMMING

Duck Typing; DuckTyping; Duck typed; Duck Type; Duck type

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)

Duck typing

Duck typing in computer programming is an application of the duck test—"If it walks like a duck and it quacks like a duck, then it must be a duck"—to determine whether an object can be used for a particular purpose. With nominative typing, an object is of a given type if it is declared to be (or if a type's association with the object is inferred through mechanisms such as object inheritance).

https://en.wikipedia.org/wiki/Duck_typing

Cotton duck

PLAIN WOVEN COTTON FABRIC

Duck (textile); Duck cloth; Duck (fabric); Cotton doek; Cotton-duck

Cotton duck (from , "linen canvas"), also simply duck, sometimes duck cloth or duck canvas, is a heavy, plain woven cotton fabric. Duck canvas is more tightly woven than plain canvas.

https://en.wikipedia.org/wiki/Cotton_duck

Wikipédia

Duck typing

Duck typing in computer programming is an application of the duck test—"If it walks like a duck and it quacks like a duck, then it must be a duck"—to determine whether an object can be used for a particular purpose. With nominative typing, an object is of a given type if it is declared to be (or if a type's association with the object is inferred through mechanisms such as object inheritance). In duck typing, an object is of a given type if it has all methods and properties required by that type. Duck typing can be viewed as a usage-based structural equivalence between a given object and the requirements of a type. See structural typing for a further explanation of structural type equivalence.

https://en.wikipedia.org/wiki/Duck typing