what is D's idiom of Python's list.extend(another_list)?

[Mike Parker]

On Monday, 21 June 2021 at 06:16:15 UTC, mw wrote:

> Ha! great. I didn't know `~` works for both single elements and 
> array!

`~` by itself is the concatenation operator and only works with 
two array operands. `~=` is the append operator and can append 
arrays or single elements.