February 2018
Intermediate to advanced
340 pages
9h 43m
English
Content preview from Go Standard Library Cookbook
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How it works...
The golang.org/x/sync/errgroup package helps to simplify the error propagation and cancellation by context for goroutine groups. The Group contains the Go method which consumes the no-arg function returning the error. This function should contain the task which should be done by the executed goroutine. The Wait method of the Group from errgroup waits until all executed tasks from the Go method are complete, and if any of them are returned err, then the first non-nil error is returned. This way, it is possible to simply propagate the error from the group of running goroutines.
Note that the Group is also created with the use of context. The Context serves as the mechanism to cancel other tasks, if the error occurs. After the ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.