Ruby How to delete element from array and return new instance of array

Question

I'm dealing with this caveat:

https://github.com/zendesk/zendesk_api_client_rb#caveats

they have an example of adding a new element to the tags array and creating a new instance which trigger the changed? state.

I need to remove an element

Answer 1

You could use the same technique they used, but with the -= operator.

>> a = []
=> []
>> a.object_id
=> 2154250660
>> a << 'hello'
=> ["hello"]
>> a.object_id
=> 2154250660
>> a += ['hi']
=> ["hello", "hi"]
>> a.object_id
=> 2154228260
>> a -= ['hi']
=> ["hello"]
>> a.object_id
=> 2154204700

Answer 2

Have you tried:

a -= [element]