Check if Key exists in Associative Array using D language.

[Dennis]

On Tuesday, 5 April 2022 at 11:26:27 UTC, BoQsc wrote:
> I'd like to know if there is similar function: that can check 
> if a **key** inside a [Associative Array][2] can be found.

You can use the `in` operator for that:
https://dlang.org/spec/hash-map.html#testing_membership