Function return a function that returns a function

I would like to have a function returning a function that returns a function with the same signature as the first function. I.e. the function should be able to provide itself as a return value.

Is this possible in swift?

Example (this does not compile!):

typealias nextStep = ((char: CChar) -> nextStep)

func process(char: CChar) -> nextStep {...}

Copyright Notice：Content Author:「Rien」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/27705796/function-return-a-function-that-returns-a-function