0
votes
2answers
142 views

What is the purpose of creating a member function with the same type as its class?

I'm sure I'll botch some of the specific terminology, but what is the difference between object and object2 in this implementation? Is the only purpose of the first method (prototyping the class's ...
1
vote
1answer
79 views

Using class like an object in Python

I am learning from Learn Python the hard way where I have come across a study drill where they want to know that whether a class can be used like an object. As I have experimented: class A(object): ...
1
vote
5answers
173 views

Clarification about Polymorphism / Inheritance

I am trying to better my understanding of polymorphism. Say I have a base class called baseClass with one method called foo() and I have three derived classes called derived1 , derived2 and derived3 ...
2
votes
4answers
1k views

Returning multiple values in Javascript

Often I am writing a function that returns multiple values, such as a pair of coordinates: function get_coords() { return ???; } If I was using a language like Python, I would use a tuple: ...
1
vote
1answer
478 views

Analogy of a class being a cookie cutter and objects being cookies

I came across the analogy of the class being a cookie cutter and the cookies being objects while reading Code Complete. I fail to see why this analogy was drawn.How is it related to the concept of ...
33
votes
6answers
3k views

How do I prove or disprove “god” objects are wrong?

Problem Summary: Long story short, I inherited a code base and a development team I am not allowed to replace and the use of God Objects is a big issue. Going forward, I want to have us re-factor ...
16
votes
5answers
1k views

Why am I seeing so many instantiable classes without state?

I'm seeing a lot of instantiable classes in the C++ and Java world that don't have any state. I really can't figure out why people do that, they could just use a namespace with free functions in C++, ...
6
votes
3answers
437 views

Is there a standard, formal name for an object or class that behaves as if it is a given object?

I have an app in Django that expects to get a record with the fields email, first_name, and last_name. However, sometimes I want to be able to send it something that isn't actually a record but ...
7
votes
6answers
3k views

Is it called class or object instance?

I have a wording / precision question. Sometimes I write "object instance" sometimes "class instance". Isn't it that an object is always an instance of a class? Therefore "object instance" is not the ...