duck typing

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- US Pronunciation
- US IPA

Definitions of duck typing words

noun Technical meaning of 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. 1
noun duck typing (computing, programming) A style of dynamic typing in which an object's current set of methods and properties determines the valid semantics, rather than its inheritance from a particular class or implementation of a specific interface. 0

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