Suppose you provide x = "abc::def", then this will return the 'def' function or object from the package 'abc'. If x = "ghi", then the 'ghi' object from the enclosing environment will be returned. If the actual variable 'ghi', rather than it's name, is passed in it will be returned unmodified.
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a string in the form "some_object_name" or "some_package::some_object_name". Or, a variable (in which case the variable is just returned; this allows the user to not need to know whether they are working with a variable or the variable name). |
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