foreach with assoc. array

[Paul Backus]

On Wednesday, 1 March 2023 at 19:05:10 UTC, DLearner wrote:
> (1) & (2) compile and run with the expected results.
> But (3) fails with:
> ```
> Error: variable `wk_Idx` is shadowing variable 
> `for3.main.wk_Idx`
> ```
> Why is this usage wrong?

With `foreach`, you can't reuse an existing variable as the loop 
variable. It always declares a new one. If you want to reuse an 
existing variable for your loop, you have to use `for`.