D

Duck typing

Style of dynamic, structural typing with lazy checking of objects' attributes

Nº Q374282 ★

Common · Knowledge

Duck typing

Style of dynamic, structural typing with lazy checking of objects' attributes

In computer programming, duck typing 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 as such (or if a type's association with the object is inferred through mechanisms such as object inheritance).

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From Wikipedia

In computer programming, duck typing 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 as such (or if a type's association with the object is inferred through mechanisms such as object inheritance). With duck typing, an object is of a given type if it has all methods and properties required by that type. Duck typing may be viewed as a usage-based structural equivalence between a given object and the requirements of a type.

Text: Wikipédia, CC BY-SA 4.0. ·

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