Add CheckedConsumer[N] and CheckedFunction[N] and add wrapper methods to Unchecked

[lukaseder]

See also: #214 (comment)

[bendem]

Came here to say that. I just had to write

.map(envelopeAndPath -> envelopeAndPath.map2(Function1.from(Unchecked.function(Files::newInputStream))))

Expected to find a method allowing this instead:

.map(envelopeAndPath -> envelopeAndPath.map2(Unchecked.function1(Files::newInputStream)))

or even

.map(envelopeAndPath -> envelopeAndPath.map2Unchecked(Files::newInputStream))

[lukaseder]

Thanks for the feedback, @bendem. This will definitely add value when implemented.

[patrox]

hi @lukaseder & @bendem, could you please have a look at the following PR and let me know if this is what you were after ?

#272

Please note though, that for now this has been done for arity of 1.

[lukaseder]

Hmm, I'm having a look at this again. I'm not quite sure what's wrong with this, @bendem:

.map(envelopeAndPath -> envelopeAndPath.map2(Unchecked.function1(Files::newInputStream)))

Tuple2.map2(Function) should accept the Function returned from Unchecked.function(). There's no need (IMO) to wrap this in a Function1, no?

Thanks for your suggestion, @patrox. That might be along the lines of what's being discussed here, although I wonder if we cannot just overload the existing function() and consumer() static utility methods in Unchecked and Sneaky. As the Function[N] and Consumer[N] arguments have different arities, the overload resolution should be non-ambiguous, no?

Do note that this code is generated, just as a hint before you move on to suggest manual implementations for all degrees 😉

[patrox]

@lukaseder yep, I'm aware that other arity methods are generated, so that's why I created just one set for the single arity to show the general idea :)

[lukaseder]

@patrox: OK, I see. So, before discussing PRs, let's discuss use-cases. How would you like to use this new feature?

[bendem]

Yes, my specific problem was fixed by 91e719d. Before that you had to use jool's Function1.

[lukaseder]

Oh, I see. Thanks for the feedback. I hadn't checked the dates...