tree 514364f85ffffb7ca9db262b05a85155325d9a7c
parent ec19277c2c5908894dad8cb3dcf2f48c6cbe8308
author Francesc Campoy <campoy@golang.org> 1449189537 -0800
committer Francesc Campoy Flores <campoy@golang.org> 1449680765 +0000

tour: add explanation of sync.Mutex

sync.Mutex is needed to solve the last exercise of the tour

Fixes golang/go#13110

Change-Id: I0b10f8c0fc0e3c656377b93bdbf40e38c5cb762b
Reviewed-on: https://go-review.googlesource.com/17403
Reviewed-by: Rob Pike <r@golang.org>