The Dart core library is a fundamental part of the Dart programming language. It provides a wide range of built-in classes, functions, and utilities that are essential for developing Dart applications. This library is automatically available to all Dart programs without the need for explicit imports.

Key Features of the Dart Core Library

The core library offers several crucial components:

Basic data types (int, double, String, bool)
Collections (List, Set, Map)
Date and time handling
Error handling and exceptions
Input/output operations
Regular expressions
Mathematical functions

Common Classes and Functions

Let's explore some frequently used classes and functions from the Dart core library:

String Manipulation

The String class provides numerous methods for working with text:


String greeting = 'Hello, Dart!';
print(greeting.toLowerCase()); // hello, dart!
print(greeting.contains('Dart')); // true
print(greeting.split(', ')); // [Hello, Dart!]

List Operations

The List class offers various methods for manipulating arrays:


List<int> numbers = [1, 2, 3, 4, 5];
print(numbers.reversed); // (5, 4, 3, 2, 1)
print(numbers.where((n) => n.isEven)); // (2, 4)
numbers.add(6);
print(numbers); // [1, 2, 3, 4, 5, 6]

DateTime Handling

The DateTime class allows for easy date and time manipulation:


DateTime now = DateTime.now();
print(now.year); // Current year
print(now.add(Duration(days: 7))); // Date 7 days from now

Important Considerations

The core library is optimized for performance and efficiency.
It's designed to work seamlessly across different Dart platforms (web, mobile, desktop).
Understanding the core library can significantly improve your Dart coding skills.
Always check the official Dart documentation for the most up-to-date information on core library features.

Related Concepts

To further enhance your Dart programming skills, explore these related topics:

By mastering the Dart core library, you'll have a solid foundation for building robust and efficient Dart applications across various platforms.