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Obj-C - Instantiating Class without [classname init] [migrated]
I am reading Kochan's book Programming in Objective-C Sixth Edition when a strange piece of code confused me.
In the book, I am trying to replicate the Calculator class, and have reached the code for ...
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Does one really need multiple instances of a class? [closed]
Generally I'm extremely skeptical of anyone who criticizes the singleton design pattern in software. In the MVC (model-view-controller) design pattern, views and controllers are usually singletons and ...
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observer class as instance
Sometimes I read in oberver-pattern descriptions, to make the constructor of a observer base class protected so the class will be abstract. but by making the constructor public (if even one is ...
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838 views
Make methods that do not depend on instance fields, static?
Recently I started programming in Groovy for a integration testing framework, for a Java project. I use Intellij IDEA with Groovy plug-in and I am surprised to see as a warning for all the methods ...
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Why are inheritance and interfaces restricted to instance members?
Disclaimer: I think the rules are almost the same in most OO languages, but since I'm most familiar with C# I'll be relating to this specific language.
I think that the use of attributes and ...
