Presented by: Brian Underwood and Adilet Abylov

About this talk
In this webinar, Brian Underwood and Adilet Abylov discuss Elixir’s with clause, a feature that can help simplify control flow. Although many developers have encountered with, it’s often not fully understood or used to its full potential.

Brian and Adilet discuss:

• How with is often perceived as expressing the “happy path”, but how it’s a bit more complex than that
• How else can be used for specific error handling
• Some of the common mistakes that can occur when patterns don’t match as expected.
• Practical techniques for managing errors, such as using helper functions
• The approach of adding context with tagged tuples
• Deciding when to handle or propagate errors in different layers of an application
• Single-clause with statements for handling errors or performing side effects like logging

What you’ll learn:

• How the with clause sometimes simplifies and sometimes complicates control flow in Elixir
• How the  else clause changes the behaviour of with
• Approaches for clean and maintainable error handling
• When single-clause with statements are useful