Pattern Matching in Elixir

These slide cover basic pattern matching principles in Elixir. Examples include case statements, multi-clause functions, and recusrsion

Transcript

1. Control Flow in Elixir by Anna Neyzberg @Aneyzb
2. Pattern Matching https://koenig-media.raywenderlich.com/uploads/2016/07/rage_morepatterns.png
4. A note about variables in Elixir …
5. Some Examples Maybe? Let’s take a look at tuples….
6. So how is this useful?
7. • An attempt to read the file my_app.config takes place. • If the attempt succeeds the file content are extracted to the variable contents. • If the attempt fails an error is raised. This is because File.read returns a tuple in the form of - {:error, reason}
8. Multi-Clause Functions
9. Recursion….
10. Recursion Continued….
11. In Conclusion….. •In elixir the “=“ sign does not mean set this variable to something else • New initialized variables are bound to the term on the right hand side •Multi-clause Functions are functions that have multiple definitions and the same arity.
12. Thank you! Twitter: @Aneyzb Email: anna@carbonfive.com Credits: • https://quickleft.com/blog/pattern-matching-elixir/ • Juric, Sasa. Elixir In Action. Shelter Island: Maning Publishing, 2015 Resource: elixirbridge.org