[Haskell-cafe] Getting the 'ThreadId' of the calling thread

[Albert Y. C. Lai]

On 13-07-29 08:35 AM, Nikita Karetnikov wrote:
> I feel that a 'myThreadId' action, which is defined in this module [1],
> is useless, but I'm not sure.  I think it will always return the
> "Map.find: element not in the map" exception because a 'threadMap'
> contains an empty 'ThreadMap'.
>
> Is it right, or am I missing something?

Other actions such as withLinksDo and forkLinkIO' insert stuff into 
threadMap. It can be non-mepty.