A migration guide from github.com/hashicorp/go-multierror to the std library errors package. In go1.20 support for “multierrors” was added. Why migrate? # Migrating from community go modules to standard library implementations is almost always a no-brainer if it provides like for like functionality. Packages in the core go standard library such as errors are covered by the go1.0 backwards compatibility guarantee [0].Because of […]

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Takeaways Errors as uint64 for better performance By convention, 0 is “OK” or “no error” Use the exhaustive linter with switch Use enums to define error cases Implement Stringer on enums for human readable error messages Use generic T ~uint64 to type custom structs to errors I have been trying to figure out a better Golang error handling pattern. In my previous […]

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Introduction to Golang Error Handling As you may already know, Golang has a different way of treating errors, there is no try/catch. You must explicitly check for errors right after calling a function. Like the following example: In the code above, we called the function Println from the fmt package. It prints a message on the standard output and […]

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