once | testing feng shui tremendiously by executing a function

once is a Shell library. once has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

This tiny Go module improves your testing feng shui tremendiously by executing a function only once that might need to be triggered from multiple call sites and not just from a single defer call site. Type Oncer works like sync.Once, except that the function to execute once is specified only, erm, once when creating a Oncer.