Hey, I have a list of Strings, and a list of lambdas that convert String to String. Is there a way to apply all lambdas sequentially to all the Strings in the list ? eg:

val transforms = listOf<(String) -> String>(
    { it.toLowerCase() },
    { it.split(",").first() }
)
val data = listOf("foo, 42", "BAR, 33")

val result = data.mapAll(transforms) // result has ["foo", "bar"]

`fold`:

val result = data.map { transforms.fold(it) { a, t -> t(a) } }

Thanks @karelpeeters

Another way of looking at it: you're looking for

zip

. Zippers can merge two lists. Typically into a list of pairs, but you can also zip with a function. In your case, the function you'd zip with is simply function application. So your example is:

listOf<(String) -> String> { it.toLowerCase() }.zip(listOf("FOO", "BAR")) { f, s -> f(s) }

No that would apply each function to the corresponding string, but he wants to apply each function to all strings.

Ah, true. To all the strings in turn. Sorry, I've missed that. Yes, then you need a fold.