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a unique item identifier means what?
If the identifier you want to pass is an ordinary identifier, pass it as the address of...
function(&identifier);
If the identifier you want to pass is an array identifier, pass its name...
function(arrayname);
Isn't keyward isn't identifier.
A N D is not an identifier as it has spaces in between each letter. A valid identifier DOES NOT have space in it.
No, the name of the variable is its identifier.