Why does a curried constructor throw an error on partial function application?

Question

when I try to create a curried constructor, like

class MyClass(a: Int, b: Int)(c: String) {
  // Some Implementation
}

why does partial application like

val partialConstructor = new MyClass(x, y)

result in the error message

missing argument list for constructor MyClass in class MyClass

score 4 · Accepted Answer · answered Jun 05 '17 at 22:58

You confuse curried functions with functions of multiple argument lists. Take a look at this answer why there are function with multiple argument lists.

For your example you should explicitly say that you want a curried function

val partialConstructor = new MyClass(x, y)(_)

Why does a curried constructor throw an error on partial function application?

1 Answers1