uber-go/multierr

uber-go/multierr has 1,212 GitHub stars and 51 forks. GitHot measured 0 stars in 24 hours. Last checked 2026-11-09 07:43 UTC. Last push 2024-04-29.

Combine one or more Go errors together

1,212 stars 51 forks

What you can do

It keeps the underlying error type hidden, allowing you to deal in error values exclusively.
It provides APIs to safely append into an error from a defer statement.
It avoids allocations where possible.
It utilizes slice resizing semantics to optimize common cases like appending into the same error object from a loop.

Net star changes over overlapping periods, not daily totals. Missing measurements are left blank. Stars measure attention, not software quality.

multierr allows combining one or more Go errors together.

Idiomatic: multierr follows best practices in Go, and keeps your code idiomatic.
- It keeps the underlying error type hidden, allowing you to deal in error values exclusively.
- It provides APIs to safely append into an error from a defer statement.
Performant: multierr is optimized for performance:
- It avoids allocations where possible.
- It utilizes slice resizing semantics to optimize common cases like appending into the same error object from a loop.
Interoperable: multierr interoperates with the Go standard library's error APIs seamlessly:
- The errors.Is and errors.As functions just work.
Lightweight: multierr comes with virtually no dependencies.

go get -u go.uber.org/multierr@latest

Stable: No breaking changes will be made before 2.0.

Released under the MIT License.

Master programming by recreating your favorite technologies from scratch.

A collective list of free APIs

Reverse engineer anything with agents, from app behavior down to native binaries.

The AI that really does things. Any OS. Any Platform. The lobster way. 🦞