I think there's a core confusion at the heart of this thread. Let's restart
operationally.
If one did have such a predicate, when would some other program actually
use it? In other words, for the predicate you have in mind, please give a
concrete example where a program would usefully say
if (isBoundOrWhateverWeCallIt(f)) {
//... do something
} else {
//... do something else
}
If the predicate means what I think it should mean, I can offer some
examples of when I would do this. If the predicate means anything else
that's been advocated on this thread, such as "fat arrow or bound", then I
have no idea why anyone would ever write code as above. Can anyone offer a
concrete example? If not, then I suggest that these other proposed meanings
are simply not useful.
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