Dart List: List Extensions | List Methods | List Properties

Dart Lists: Tricks and Tools for Your Party List

In Dart, Lists are like dynamic guest lists for your programming party. Now, let's talk about some cool tricks and tools you can use to manage your guest list efficiently.

1. List Methods: Handy Helpers

Methods are like little helpers that make your tasks easier. In Dart Lists, you have methods to add, remove, and manipulate elements effortlessly.

• Adding Guests: add()

    List<String> partyGuests = ['Alice', 'Bob', 'Charlie'];
    partyGuests.add('David');
  

  Here, we're using the add() method to invite David to the party. It's like a quick way to add a new friend to your guest list.

• Removing Guests: remove()

    List<String> partyGuests = ['Alice', 'Bob', 'Charlie'];
    partyGuests.remove('Bob');
  

  With remove(), you can ask Bob to leave the party. It's like ushering someone out gracefully.

• Checking Presence: contains()

    List<String> partyGuests = ['Alice', 'Bob', 'Charlie'];
    bool isBobThere = partyGuests.contains('Bob');
  

  The contains() method helps you check if Bob is still at the party. It's like scanning the room to see if your friend is around.

2. List Properties: Checking the Scene

Properties are like detectives, providing information about your list. Dart Lists come with useful properties to check their size or if they're empty.

• Checking Size: length

    List<String> partyGuests = ['Alice', 'Bob', 'Charlie'];
    int numberOfGuests = partyGuests.length;
  

  The length property tells you how many friends are on your guest list. It's like counting heads to see how big your party is.

• Checking if Empty: isEmpty

    List<String> partyGuests = [];
    bool isPartyEmpty = partyGuests.isEmpty;
  

  The isEmpty property helps you see if your party list is completely empty. It's like checking if your party is still in the planning phase.

3. List Extensions: Jazzing It Up

Extensions are like adding a little jazz to your list operations. They provide extra functionalities to make your coding experience more enjoyable.

• Sorting: sort()

    List<int> numbers = [3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5];
    numbers.sort();
  

  The sort() extension arranges your list in ascending order. It's like organizing your playlist from the oldest to the newest songs.

• Reversing: reversed

    List<String> partyGuests = ['Alice', 'Bob', 'Charlie'];
    List<String> reversedGuests = partyGuests.reversed.toList();
  

  Using reversed, you can create a new list with your guests in reverse order. It's like changing the direction of your party vibes.

Dart Lists come with these awesome methods, properties, and extensions to make your coding party a blast. Whether you're adding, removing, or checking the scene, these tools have got you covered!