Today s question I f I have a function for instance ``` fun kotlinlang #arrow-contributors

Today's question. I f I have a function. for insta...

pablisco

01/23/2018, 12:32 PM

Today's question. I f I have a function. for instance:

Copy code

fun <B> foldLeft(b: B, f: (B, A) -> B): B

Should the body be:

Copy code

ev().fold({ b }, { f(b, it) })

or just

Copy code

fold({ b }, { f(b, it) })

My understanding is that

ev()

is just a safe down cast , right?