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In Python, returning self in the instance method is one way to implement the fluent pattern. It is however discouraged by the language’s creator, Guido van Rossum, [3] and therefore considered unpythonic (not idiomatic) for operations that do not return new values. Van Rossum provides string processing operations as example where he sees the ...
Typically, this means returning multiple results in a register (as opposed to returning a pointer to a tuple allocated on the heap whose components are the function's multiple return values.) CPR analysis was introduced in the context of compiling Haskell (a lazy functional language) and is implemented in the Glasgow Haskell Compiler.
Mock objects differ in that they themselves contain test assertions that can make the test fail, for example, if the person's name and other data are not as expected. Fake and mock object methods that return data, ostensibly from a data store or user, can help the test process by always returning the same, realistic data that tests can rely upon.
The degree of logic permitted in the view varies among different implementations. At one extreme, the view is entirely passive, forwarding all interaction operations to the presenter. In this formulation, when a user triggers an event method of the view, it does nothing but invoke a method of the presenter that has no parameters and no return ...
"In object-oriented systems with multiple inheritance, some mechanism must be used for resolving conflicts when inheriting different definitions of the same property from multiple superclasses." [ 1 ] C3 superclass linearization is an algorithm used primarily to obtain the order in which methods should be inherited in the presence of multiple ...
Multiple dispatch is used much more heavily in Julia, where multiple dispatch was a central design concept from the origin of the language: collecting the same statistics as Muschevici on the average number of methods per generic function, it was found that the Julia standard library uses more than double the amount of overloading than in the ...
In object-oriented programming, the iterator pattern is a design pattern in which an iterator is used to traverse a container and access the container's elements. The iterator pattern decouples algorithms from containers; in some cases, algorithms are necessarily container-specific and thus cannot be decoupled.
For example, one such method that would give the class it appears in the same behavior as the return value of f() above would be void Deconstruct ( out string a , out int b ) { a = "foo" ; b = 1 ; } In C and C++, the comma operator is similar to parallel assignment in allowing multiple assignments to occur within a single statement, writing a ...