Differences between some constructs

[Marcin 'Qrczak' Kowalczyk]

1. Is there any difference between
    \a b -> (a, b)
and
    let f a b = (a, b) in f
?

2. Is there any difference between
    case x of (a, b) -> (b, a)
and
    let (a, b) = x in (b, a)
?

-- 
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