[FEATURE] Add nullable expressions

[xVemu]

Is your feature request related to a problem? Please describe. Kotlin has nullable types, so it's weird that findFirst function throws ElementNotFoundException instead of returning null. The same applies to findAll, why it can't return empty list if none element was found?

Describe the solution you'd like Add some function like findFirstOrNull and make findAll return empty list, when no elements were found.

Describe alternatives you've considered Currently, I'm using this as a workaround:

    private fun DocElement.findFirstOrNull(selector: String): DocElement? = try {
        findFirst(selector)
    } catch (e: ElementNotFoundException) {
        null
    }

[christian-draeger]

Please check relaxed parsing option as described here under point 4: https://docs.skrape.it/docs/dsl/extracting-data-from-websites

[xVemu]

Still throws error in this scenario:

fun main() = runBlocking {
    getLesson()
}

suspend fun getLesson() = withContext(Dispatchers.IO) {
    skrape(AsyncFetcher) {
        request {
            url = "https://google.com"
        }
        response {
            htmlDocument {
                relaxed = true
                findFirst("body") {
                    children.drop(1).forEach { row ->
                        print(row.findAll("xdddddd"))
                    }
                }
            }
        }
    }
}

[christian-draeger]

ok i see, this is related to the following issue:

https://github.com/skrapeit/skrape.it/issues/223 https://github.com/skrapeit/skrape.it/pull/227

will be closed as duplicate