Way to accept different clousure in inits and assign it to the same private variable-CodePudding

Suppose I have two inits and one private property like below.

struct MyStruct {
    let clousure: (Int, String, Bool) -> String
    
    public init(clousure: @escaping (Int, String) -> String) {
        /// How to assign this to the private property of MyStruct
        self.clousure = ... ? /// THIS IS MY QUESTION
    }

    public init(clousure: @escaping (Int, String, Bool) -> String, ... ) {...}

Is there a way how can i wrap the accepted clousure and supply the bool as some default value, i.e false? thanks in advance

CodePudding user response：

If you would share more info about the goal and what you are trying to achieve by passing the clousure and/or disregard part of the arguments we can help further. From the code point of view, it seems like the @escaping closure you are passing can just disregard the boolean value as follow:

struct MyStruct {
  let clousure: (Int, String, Bool) -> String

  public init(clousure: @escaping (Int, String) -> String) {
      /// How to assign this to the private property of MyStruct
      self.clousure = { i, str, _ -> String in
          return clousure(i, str)
      }
  }
}

And be used as follow:

let s = MyStruct() { i, s -> String in return "string = \(s), int = \(i)"}
print(s.clousure(1, "hello", false))

Resulting in the output

    string = hello, int = 1

I'm not sure why would you want to do that, maybe you indeed want to achieve something like @Quack E. Duck suggested and have different outcome given the boolean value:

struct MyStruct {
    let clousure: (Int, String, Bool) -> String

    public init(clousure: @escaping (Int, String) -> String) {
        /// How to assign this to the private property of MyStruct
        self.clousure = { i, str, increaseCount -> String in
            if increaseCount { return clousure(i 1, str) }
            else { return clousure(i, str) }
        }
    }
}