Scala provides three primary collection types:
List,
Set, and
Map. Here are the key differences between these collections:
1. List : * Ordered collection: Lists maintain the order of elements in which they are inserted.
* Allows duplicate elements: A List can contain duplicate elements.
* Immutable: Lists are immutable, meaning they cannot be modified after creation.
* Can be accessed by index: Elements in a List can be accessed by their index position.
* Common operations: Lists provide various operations like `
head`, `
tail`, `
prepend`, `
append`, and more for manipulating elements.
2. Set : * Unordered collection: Sets do not maintain any specific order of elements.
* Does not allow duplicate elements: Sets automatically remove duplicate elements.
* Immutable: Sets are immutable, meaning they cannot be modified after creation.
* Fast element lookup: Sets provide efficient lookup operations for determining whether an element exists in the Set.
* Common operations: Sets provide operations like `
contains`, `
intersect`, `
union`, `
diff`, and more for set manipulation.
3. Map : * Key-Value pairs: Maps store elements as key-value pairs.
* Keys are unique: Each key in a Map is unique, and it is used to retrieve the corresponding value.
* Immutable: Maps are immutable, meaning they cannot be modified after creation.
* Fast value retrieval: Maps provide efficient lookup operations to retrieve the value associated with a given key.
* Common operations: Maps offer operations like `
get`, `
getOrElse`, `
contains`, `
keys`, `
values`, and more for map manipulation.
