Description
This issue describes how to implement the mutation concept exercise for the F# track.
Getting started
Please please please read the docs before starting. Posting PRs without reading these docs will be a lot more frustrating for you during the review cycle, and exhaust Exercism's maintainers' time. So, before diving into the implementation, please read up on the following documents:
Please also watch the following video:
Goal
The goal of this exercise is to teach the student the basics of the Concept of Mutation in F#.
Learning objectives
- Know how mutation works in F#.
- Know how to define a variable (mutable binding).
- Know how to work with reference cells.
- Know how to update mutable values.
- Know when to use mutability.
Out of scope
- How the compiler sometimes translates functional code to mutation.
Concepts
The Concepts this exercise unlocks are:
mutation: know how mutation works in F#; know how to define a variable (mutable binding); know how to work with reference cells; know how to update mutable values; know when to use mutability.
Prerequisites
This exercise's prerequisites Concepts are:
generic-types: know what a generic type is.records: know how to work with records.
Any data types used in this exercise (e.g. strings or integers) should also be added as prerequisites.
Resources to refer to
Hints
- Variables: how to define variables.
- Reference cells: how to work with reference cells.
After
- Variables: how to define variables.
- Reference cells: how to work with reference cells.
Representer
This exercise does not require any specific representation logic to be added to the representer.
Analyzer
This exercise does not require any specific logic to be added to the analyzer.
Implementing
To implement this exercise, please follow these instructions.
Help
If you have any questions while implementing the exercise, please post the questions as comments in this issue.