2) the word duck expresses how is that determining done; it's kind of a 'loose' determining, as in: "if it walks like a duck ... then it's a duck". It's 'loose' because the thing may be a duck or may not, but whether it actually is a duck doesn't matter; what matters is that I can do with it what I can do with ducks and expect behaviors ...

Wikipedia used to say* about duck-typing:. In computer programming with object-oriented programming languages, duck typing is 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.

Aug 3, 2011 · To me C++ templates are a compile-time version of duck typing. The compiler will compile e.g. Class and as long as your Duck has all needed types it will instantiate a class. If something is not correct(e.g. copy constructor missing) the compilation fails. The counterpart in real ducktyping is a failure when you call a function with a non-duck ...

Sep 7, 2008 · Duck typing cripples most modern IDE's static checking, which can point out errors as you type. Some consider this an advantage. I want the IDE/Compiler to tell me I've made a stupid programmer trick as soon as possible. My most recent favorite argument against duck typing comes from a Grails project DTO:

Jul 16, 2012 · That's why it is called duck typing: if it looks like a duck (e.g., it has a method called quack() then we can act as if that object is a duck). So are these related? They are simply separate features that a programming language may have. There are programming languages which have polymorphism but that do not have duck typing (such as Java).

Sep 17, 2012 · "Generic programming" can make use of duck typing or not, depending on the exact details. C++ generic containers do use "type 2" duck-typing, because for a general type in C++ it's not guaranteed that you can copy it, compare it, get a hash value, etc. Java generic containers don't, Object has enough methods already to make it hashable etc.

Nov 14, 2008 · Along with the normal types like object, int, string...boo has a special type called "duck". The term is inspired by the ruby programming language's duck typing feature ("If it walks like a duck and quacks like a duck, it must be a duck").

Dec 4, 2024 · The following is pseudo code. Let's say I have a language which supports duck typing of this form: my_structure = { value_a: integer, value_b: integer, } duck_typed_function( ducktyped

Dec 31, 2014 · Seriously, rubber duck debugging works.[1. And as legendary programmer Raymond Chen points out in a comment to this entry, if you can’t explain to the duck why you’re executing a particular statement, maybe that’s because you started programming before you had a plan of attack.] (Emphasis mine)

Jul 23, 2010 · If having the "template nature" of things propagate widely is OK with you, templates ("compile-time duck typing") can give you blazing speed (avoiding the "level of indirection" that's implicit in a virtual-function call) though maybe at some cost in memory footprint (in theory, good C++ implementations could avoid that memory overhead related to templates, but I don't feel very confident that ...