class Foo {
    val seq: Sequence<Bar> = //...
    fun process() {
        for (elem in seq) {
            // do something with elem, 
            // but maybe throw an exception
        }
    }
}

is it sound to call

process()

again if an exception is thrown? will the sequence continue from the element immediately after the element for which the exception was thrown?

Yes. As long as the exception wasn't thrown by the sequence itself, it is in valid state even if an exception appeared somewhere else (and it will continue from the next element which wasn't yet read).

thanks!

If your goal is to communicate to the caller whether they should retry the operation or not, there is probably a better way to do it, though. What's your objective?

I had the (probably bad) idea of wrapping that

process()

function in a loop that keeps retrying the function until

seq

is exhausted. the

catch

block of the wrapping function does something with the caught exceptions.