totally separate question - can you define a Lens with add'l function or post-processing? example: `...

# http4k

[andyg]

totally separate question - can you define a Lens with add'l function or post-processing? example: val myLens = Query.nonEmptyString().required("ids")...split(";") Within the route I can insert the request then add functions: myLens(myRequest).split(";") but is it possible to add the split to the Lens definition?

[s4nchez]

Yes, you can use .map for that:

val lens =  Query.nonEmptyString().map { it.split(";") }.required("ids")
    println(lens(Request(GET, "").query("ids", "a;b;c")))