commit 910febaab8909ed1a73968ef4cffb61440d125c2
author Katrina Owen <katrina.owen@gmail.com> Sat Feb 06 09:04:18 2016 +1100
committer Andrew Gerrand <adg@golang.org> Mon Feb 08 02:47:05 2016 +0000
tree 8d7524bd2af48cdecbab21d7f2a8b84812030d57
parent ef6b8ec2d71077a475d858425d489e4e8f3c8db6

content: explain the example in the channels slide

There was a suggestion to simplify the example in order to
get rid of the somewhat complicated-looking code that split
the slice in half:

    a[:len(a)/2]

I think that the example is actually simple enough, and that
giving the reader a bit of context up front about what the code
is accomplishing will make it seem simpler without actually
changing the code.

Fixes golang/go#13894

Change-Id: I1dfe8ec6de07bb1d74713d824e93c34835139933
Reviewed-on: https://go-review.googlesource.com/19290
Reviewed-by: Andrew Gerrand <adg@golang.org>