Goodbye, Object Oriented Programming

Post by mannykannot » Mon, Jul 25, 2016, 11:48 AM UTC

adrianratnapala wrote: post #246

eru wrote: post #233

Earlier quoted context omitted.

Actually, from what I've seen, pure FP forces people with less experience into design and structures of their code that they'd only do in imperative settings with considerably more experience. Eg when I asks students to do some simple exercise like "write a function that finds the shortest path through a given graph", in impure languages their solutions tend to return a path if they find one, but just give up with eg…

Funny choice of exmple, the algorithms I am aware of for finding shortest paths require mutable vertices that store the scores and pointers (edges) for the best part found so far . No doubt there ways to do it in a pure functional language -- but that requires a bit of thought. Compared to that difficulty, this business of return values seems trivial. Worse, a language that forces people to Do The Right thing, might…

Post by pkroll » Mon, Jul 25, 2016, 12:27 PM UTC

GFK_of_xmaspast wrote: post #283

flukus wrote: post #221

Earlier quoted context omitted.

Quite a few, but the worst would be the custom logger. I got lost trying to trace the inheritance graph. which spans projects, and the dependency graph, loggers within loggers within loggers. I gave up when I ran out of space trying to sketch the relationships in my notepad. Being encapsulated means you don't actually have any control over the logger, or the threads it spins up. Creating a logger for a new app requir…

> If only there was some free and stable alternative... There's no shortage of good-enough loggers out there for major languages.

Post by mk89 » Mon, Jul 25, 2016, 12:58 PM UTC

eru wrote: post #241

mk89 wrote: post #81

When I read such titles I feel sad. In 2016 we are still talking about Cobol, which is spread in a relatively niche market and considered as a pillar in fields like banking, how can the object oriented paradigm be considered " past or even bad? It is the present and will be the future for at least the next 20 years, considering the number of billions lines of code. From a management perspective, such statements are n…

Cobol is certainly considered bad.

Post by imtringued » Mon, Jul 25, 2016, 2:01 PM UTC

jghn wrote: post #60

vinceguidry wrote: post #28

Inheritance is overused in OOP. There are many ways to share object behaviors, inheritance only works well when you expect all objects of both classes to share all behavior except one or two things. Even then, you should investigate dependency injection before reaching for inheritance. For the example given for the Triangle Problem, the author isn't clear about exactly what behavior is being shared among the classes.…

From a purist view one could argue that inheritance doesn't belong in OO in the first place. Alan Kay's first descriptions of Smalltalk & OOP did not include inheritance concepts.

  class A {
      public int field1;
      public void method1() {
          System.out.println("A");
      }

      public void method2() {
          System.out.println("A");
      }
  }

  class B extends A {
      public int field2;
      public void method1() {
          System.out.println("B");
      }
  }

  interface C {
      public void method1() {}
      public void method2() {}
  }
  
  class A implements C {
      public int field1;
      public void method1() {
          System.out.println("A");
      }
      public void method2() {
          System.out.println("A");
      }
  }

  class B implements C {
      public A a;
      public int field2;
      public void method1() {
          System.out.println("B");
      }
      public void method2() {
          a.method();
      }
  }

Post by norea-armozel » Mon, Jul 25, 2016, 2:13 PM UTC

eru wrote: post #231

lispm wrote: post #117

Earlier quoted context omitted.

The real disadvantage of pure functional programming is that it is notoriously difficult to use and thus only very few programs outside specialized domains are written in them. For example I would guess that in a typical enterprise (say, a manufacturing company), 0.0001% of the software is written in a pure functional language. Things OO languages 'force' us seem to be relatively easy to use: sending a message to a c…

The majority of software written ever has been written in the world's most popular functional programming language: Excel.