Question 1

How does Commandeer compare to Cobra?

Accepted Answer

Commandeer is lighter and automates flag generation from structs to reduce boilerplate, while Cobra offers more features like subcommands and built-in help but requires manual setup. The optional cobrafy package bridges the gap for GNU/POSIX-style flags.

Question 2

Can Commandeer handle subcommands?

Accepted Answer

No, Commandeer focuses on flag generation from structs and doesn't natively support subcommands. For subcommands, you'd need to integrate it with other libraries like Cobra or implement custom logic in your code.

Question 3

How to use nested structs in Commandeer?

Accepted Answer

Commandeer supports nested structs with dot-joined flag names by default, but you can use the flag:"!embed" tag to elevate fields to the top level, as shown in the README example with Vehicle struct fields.

Question 4

Does Commandeer support environment variables?

Accepted Answer

The README doesn't mention environment variable support. Commandeer is designed for CLI flags, so you'd need to handle environment variables separately in your application logic, such as in struct initializers or methods.

Question 5

Is Commandeer good for large CLI projects?

Accepted Answer

It can be, especially for minimizing boilerplate, but for very large applications with complex CLI needs, the lack of advanced features like validation might require additional tooling or integration with frameworks like Cobra.

Question 6

How to add validation to flags in Commandeer?

Accepted Answer

Commandeer doesn't provide built-in validation; you need to implement it in your struct's methods, such as in the Run() function where error checking is done, as shown in the example with Num and Vehicle conditions.

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