Go WaitGroup: Avoiding a Subtle Bug

TLDR: Typically this means the calls to Add should execute before the statement creating the goroutine or other event to be waited for — WaitGroup Docs

Correct

…and here it is the way I originally wrote it. The below code is WRONG don’t use.

The correct way is documented but without running into the issue the documentation didn’t register with me that the above code is wrong and won’t work.

That’s all really. Hoping it prevents the issue for someone else trying to make go wrappers to handle goroutines.