Show HN: Randstr – random strings at the command line with unicode/emoji (go)

I've been learning go and this is my first CLI app. There's definitely some YAGNI in this..cough emoji cough..but supporting unicode/emoji led me to expressing the charsets as an interface instead of as a string or array of characters, which are so nice and so lightweight in go.

brew install leighmcculloch/randstr/randstr

or

go install github.com/leighmcculloch/randstr/cmd/randstr

Feedback welcome, especially on project structure and best ways to distribute go CLIs.