Discussion on "How to code like a pro in 2022 and avoid If-Else"

Thai Tran · 2022-06-16T04:36:57.516Z

Using If-Else is one of the programming fundamentals that we learned in college and it is helpful to get us into our first jobs. Interestingly, many senior developers are convinced that If-Else is evil and you should avoid using If-Else in your code ...

raddevus

Software Developer Team Lead with 30 years of development experience.

Jun 24, 2022

That's a nice well-written article with good points.

Software Dev Team Lead

Here's a Software Dev Team Lead's way of doing this: No need to even determine the type. Instead the type implements the correct method for itself & there is never a need to even know the base type. Strategy pattern. 😎🤓

Try The Code

Try the code out and see it run at: stackblitz.com/edit/typescript-xibe8j

interface Animal{
  Speak();
}

class Cat implements Animal{
    Speak(){
      alert("meow");
    }
}

class Dog implements Animal{
  Speak(){
    alert("woof");
  }
}

class Lion implements Animal{
  Speak(){
    alert("roar!");
  }
}

let a : Animal = new Dog();
a.Speak(); // woof

let allAnimals = [];
allAnimals.push(new Dog());
allAnimals.push(new Lion());
allAnimals.push(new Cat());
allAnimals.push(new Lion());

allAnimals.forEach( a => a.Speak());

Thai Tran

Software Developer

Jun 24, 2022

Take my 💰 please!

Alessandro

Software Dev

Jul 2, 2022

This is good, but you can run into abstraction issues (I am not familiar with Typescript, but on this I am coming from a C++ point of view)... and the article makes such a good way to evolve this if/else with pushing it further to call functions from a map.

Search Hashnode

How to code like a pro in 2022 and avoid If-Else

Responses19

Software Dev Team Lead

Try The Code