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Elixir

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How do I perform error handling in Elixir?

Error handling in Elixir can be done using `try`, `catch`, and `rescue` constructs, along with `with` statements for cleaner handling of multiple operations. Use pattern matching for proactive error management.

Error handling in Elixir is a critical aspect of building robust applications, and it can be accomplished using several constructs and techniques. The primary constructs for handling errors are try, catch, and rescue. The try block allows you to wrap code that might raise an error, while rescue is used to handle exceptions that occur within the try block. For example, you might use rescue to catch specific errors and implement custom recovery logic. The catch clause can capture non-local returns, allowing for more granular control over flow, but it's less commonly used for standard error handling. For scenarios where multiple operations may fail, using the with statement can lead to cleaner and more readable code. This construct allows you to chain multiple expressions together while handling errors at each step. Additionally, Elixir's pattern matching capabilities enable you to manage errors proactively by pattern matching on the return values of functions. By returning tuples like {:ok, result} or {:error, reason}, functions can communicate success or failure clearly, allowing the caller to handle each case appropriately. Embracing these error-handling techniques will help you create resilient Elixir applications that can gracefully handle unexpected situations.

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