Dart Collections Overview#

Dart provides a rich set of collections to efficiently store and manipulate data. The three main types of collections are Lists, Sets, and Maps. A List is an ordered collection that allows duplicate elements and provides indexed access. A Set is an unordered collection of unique items, best used when duplicates are not needed. A Map is a key-value store that allows fast lookups and updates via keys. Dart also offers various methods for filtering, transforming, and iterating over these collections, as well as performance tools for managing complex data structures efficiently.

Key Collection Types and Operations#

1. List in Dart#

Creating, accessing, and modifying lists
List methods
List comprehension

2. Set in Dart#

Creating, accessing, and modifying sets
Set methods
Set operations (union, intersection, difference)

3. Map in Dart#

Creating, accessing, and modifying maps
Map methods

4. Where in Dart#

Filtering collections using the where method

5. Iterable in Dart#

Overview of the Iterable interface
Common iterable methods

6. List and Set Literals#

Using const for immutable collections

7. Spread Operator and Collection If#

Using the spread operator (...)
Conditional elements in collections

8. Map Entries#

Working with key-value pairs in maps

9. Collection Types and Operations#

Dynamic collections with mixed types
Nested collections (e.g., lists of lists, maps of lists)

10. Performance Considerations#

Time complexity and efficiency of operations on collections