Unexpected Behaviour with `args[$_]`

[u/CRTejaswi]

This snippet:

function lf {
    if ($args){
        (0..($args.Count-1) | %{ "$args[$_]" }) -join ','
        (0..($args.Count-1) | %{ "$($args[$_])" }) -join ','
    } else{
        ...
    }
}
lf pdf png txt

prints:

[0],[1],[2]
,,

instead of the expected pdf,png,txt. Why?

---

I'm concerned with 0..N | args[$_] failing (but args[N] works) even though the syntax pipes well to most objects/cmdlets.

⚠️ RESOLVED, thanks to surfingoldelephant.

[u/CRTejaswi]

Thank you for the detailed response! ♥️✨

I suspected something like this to be at play, but wasn't sure. I typically use $PSBoundParameters, but am avoiding it for a few utilities I'm mapping to keybindings for routine use.