Re: Slice/Substr [0..?lastIndexOf(".")] How refer itself without create a variable?

[Andrea Fontana via Digitalmars-d-learn]

On Thursday, 5 December 2019 at 11:28:51 UTC, Marcone wrote:

Simple example:

writeln("Hi\nHow are you?\nGood".splitLines()[0][0..?lastIndexOf(r"\")]);

How to refer to this string in lastIndexOf() without create a variable?

Thank you.

One solution:

    writeln(
        "Hello\nHow are you?\nGood"
        .splitLines()
        .map!(x => x[0..x.lastIndexOf("o")])
    );

But be careful: lastIndexOf could be < 0 if string is not found.