How to add elements from a hash to an array?

Question

ruby

As a means of pure rub from a hash of this kind

row = {lk: {id: 181, name: "Client_name"}, lpp: {id: 123, name: "Client_name2"}}

Get an array of ids, so that in the end it would be like this. [181,123]
Moreover, the hash length can be different, and it can even be empty, in which case an empty array should be returned.

Answer 1

row = {lk: {id: 181, name: "Client_name"}, lpp: {id: 123, name: "Client_name2" }}
row.map{ |k, v| v[:id] }

Higher-order functions are the head of everything. https://ruby-doc.org/core-2.6.3/Enumerable.html