Documentation suggests that `==` works on tasks, but it doesn't

[jvoigtlaender]

For example, the documentation of Task.map2 (http://package.elm-lang.org/packages/elm-lang/core/3.0.0/Task#map2) contains this line:

map2 (+) (succeed 9) (succeed 3) == succeed 12

However, issuing that exact line in a program will actually evaluate to False. Very confusing, for example to @paparga here.

Maybe the documentation shouldn't be using == on tasks, and indeed maybe it should explicitly mention that == is wonky on tasks, as the documentation already says elsewhere about Dict etc.

(Note: For Dict etc., equality could potentially be made unwonky, but for tasks not.)

[halfzebra]

Here's my take on fixing those confusing in docs #557

[halfzebra]

Here's my take on fixing those confusing in docs #557

[jvoigtlaender]

Thanks, I like your changes there!

I'll copy my original comment from above to the opening comment over there, so that Evan sees it all in one place when reviewing the PR.

[jvoigtlaender]

Thanks, I like your changes there!

I'll copy my original comment from above to the opening comment over there, so that Evan sees it all in one place when reviewing the PR.