go-arg
A Go library for parsing command-line arguments by defining a struct, supporting flags, environment variables, and subcommands.
What is go-arg?
go-arg is a command-line argument parsing library for Go that uses struct definitions to declare and parse arguments. It simplifies CLI development by leveraging Go's type system, eliminating the need for separate configuration APIs and allowing developers to define arguments directly as struct fields with tags.
Go developers building command-line tools, from simple scripts to complex applications with subcommands, who prefer a declarative, type-safe approach to argument handling.
Developers choose go-arg for its intuitive struct-based API that reduces boilerplate, integrates seamlessly with Go's type system, and supports advanced features like environment variables, subcommands, and custom validation without sacrificing simplicity.
Overview
Struct-based argument parsing in Go
Use Cases
Best For
- Building Go CLI tools with a declarative, struct-based argument definition
- Implementing subcommand architectures similar to git (e.g., checkout, commit, push)
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