Extracting an element from the array
I sometimes use the terminology extracting a penguin object from the array.
By that, I don't mean physically removing the object from the array.
Once an array element is populated, it is impossible to remove the contents of the element.
If you don't want those contents to be there, you must overwrite those contents with something else.
By extracting the object, I mean extracting a copy of the contents of the element which can be used in the current expression.
Unless you store the copy somewhere else, the copy ceases to exist when the expression terminates.