WHAT DOESN’T WORK IN MY CONTEXT:

do {

    var str = try String(contentsOf: urlContext.url)

    str.removeAll { $0 == “\r” }

    let lines = str.split(separator: “\n”)

   …

} catch {}

BUT THE FOLLOWING WORKS NICELY::

var lines = [String]()

do {

    let str = try String(contentsOf: urlContext.url)

    str.enumerateLines { (line, stop) in

        lines.append(line)

        stop = false

    }

} catch {}

Note: since enumerateLines is not labeled ’throws’, Xcode complains if I try to throw from it’s closure. So instead of working one line at a time within the closure, I need to build a line array and then process it (one line at a time) in a second do-block.

So I have a solution, but I don’t understand the original code didn’t work. Any insights?