F# Collections

F# core library has a set of collections and wrapper functional style modules that are useful. In this chapter, we will go through the basic list of collection modules with examples and understand their inner workings.

The following is a basic list of collection modules:

• Seq: This performs basic operations on any collection implementing IEnumerable<'T>
• Array: This performs basic operations on Array collections
• List: This performs basic operations on List collections
• Map: This performs functional style operators for the Map type
• Set: This performs functional style operators for the Set type

Sequence

Sequence is a logical series of elements of the same type. Sequences are lazy in nature and always iterate a single element at any given time, so it has better performance over large collections when compared to arrays or lists. Sequences are basically the .NET IEnumerable<'T> collections that have an alias seq<'T> type in F#. The Seq module provides several...