小编Ami*_*mit的帖子

只是想知道Currying的问题

如果我们已经定义了curried函数curriedNewSum

scala> def curriedNewSum(x : Int)(y : Int) = x + y
curriedNewSum: (x: Int)(y: Int)Int

scala> curriedNewSum(10)(20)
res5: Int = 30

scala> var tenPlus = curriedNewSum(10)_
tenPlus: (Int) => Int = <function1>

scala> tenPlus(20)
res6: Int = 30

scala> var plusTen = curriedNewSum(_)(20)
<console>:6: error: missing parameter type for expanded function ((x$1) => curri
edNewSum(x$1)(20))
       var plusTen = curriedNewSum(_)(20)
                                   ^

那么为什么curriedNewSum(10)_ works&curriedNewSum(_)(10)不是吗？