On Fri, Feb 17, 2017 at 1:34 PM, <so.qu...@gmail.com> wrote:
> I'm not sure how to implement and use the Done function and its returned
> channel for contexts.
> https://golang.org/pkg/context/#Context
>
> The comments say to refer to https://blog.golang.org/pipelines, but I didn't
> see any example there.
>
> Can you provide an example of how to implement a context that supports
> cancellation with Done?
You aren't really expected to write your own implementations of the
Context interface. You are expected to start with context.Background
and modify that context using WithCancel, WithTimeout, WithValue, etc.
For example, if you write
ctx, cancel := ctx.WithCancel(context.Background())
Then ctx.Done() will be closed when you call cancel().
Ian
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