Re: How to extend the string class to return this inside the square bracket?

[jfondren via Digitalmars-d-learn]

On Friday, 13 August 2021 at 23:23:55 UTC, Marcone wrote:
On Friday, 13 August 2021 at 23:08:07 UTC, jfondren wrote:
On Friday, 13 August 2021 at 22:09:59 UTC, Marcone wrote:

Isn't there some unario operator template that I can use with 
lambda to handle a string literal?

So, something other than an exact "lit"[0..this.xx(..)] syntax 
is fine?

What didn't you like about `"Hello 
World!".findSplit("o")[0].writeln;` then?

What is a real example of something you want to do?

writeln("Hello World!"[x.indexOf("e")..x.indexOf("r")]);

indexOf()is just a simple example, not the goal. I want handle 
literal inside [] like it bellow, but in literal:

string x = "Hello World!";
writeln(x[x.indexOf("e")..x.indexOf("r")]);

```d
unittest {
    import std.functional : pipe;
    import std.string : indexOf;

    assert("Hello, world!".pipe!(x => x[x.indexOf("e") .. 
x.indexOf("r")])
            == "ello, wo");
}
```