why there is a [] at the end of assocArray

[Stanislav Blinov]

On Wednesday, 19 January 2022 at 13:15:35 UTC, michaelbi wrote:

>     	foreach(line; > 
> File("input.txt").byLine.map!(a=>a.idup).array.transposed)

> so why there is a [] at the end of assocArray printed? thanks.

...because there's an empty line at the end of input.txt?