🧺Dart Basics
Welcome to the world of Flutter! Before diving into Flutter, it's essential to understand its backbone - the Dart language. Let’s take the first step towards mastering Flutter by learning the basics of Dart!
Here's an optional video, either you can watch this video tutorial or just go through the documentation below.
1. Installing Dart 💻
Dart is the programming language used for building applications in Flutter. First, you'll need to install Dart on your machine. Follow the official Dart installation guide to get it set up.
Or you can simply use dart's online code editor dartpad.
2. Your First Dart Program 🎉
Once Dart is installed, it's time to write your first Dart program. Create a new file called main.dart
and type the following code:
Save the file and run it by typing dart main.dart
in your terminal. You should see Hello, Dart!
printed to the console. The main()
function is the entry point of a Dart program, and print()
is a function that outputs text to the console.
3. Variables and Data Types 🧮
Variables are used to store data that can be used and manipulated throughout a program. In Dart, you can define a variable with the var
keyword, or specify its type for added clarity:
4. Control Flow 🔄
Control flow allows you to create paths in your code that will only be executed under certain conditions. This is done using statements like if
, else
, for
, while
, and switch
.
If-Else Statements:
Loops:
5. Functions ⚙️
Functions are blocks of code that perform a specific task and can be used repeatedly in a program. Here's how you can define and call a simple function to add two numbers:
6. Error Handling 🚫
Errors can occur while your program is running. It's important to handle these errors to ensure your program doesn't crash. Dart uses try
, catch
, and finally
blocks to handle errors.
Assignments 📝
By completing these assignments, you'll reinforce what you've learned and get more comfortable with Dart.
Now that you've learned the basics of Dart, it's time to put your knowledge to the test. Here are some assignments for you:
Once you're ready, you can proceed to the next topic: Flutter Installation and Setup. Remember, practice is the key to mastering any programming language!
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