将二进制函数应用于元组(uncurrying)
使用 uncurry
函数(来自 Prelude
或 Data.Tuple
)将二进制函数转换为元组上的函数。
uncurry (+) (1, 2) -- computes 3
uncurry map (negate, [1, 2, 3]) -- computes [-1, -2, -3]
uncurry uncurry ((+), (1, 2)) -- computes 3
map (uncurry (+)) [(1, 2), (3, 4), (5, 6)] -- computes [3, 7, 11]
uncurry (curry f) -- computes the same as f