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This function extends the native union function to work on two or more arguments.
unionList(...)
A list of or any number of vector like objects of the same mode, which could also be operated on by the native R set operations
A vector like object of the same mode as the first argument, containing all the elements of all arguments passed to the function
# NOT RUN { list1 <- list('a', 'b') list2 <- list('a', 'c') list3 <- list('c', 'd') listAll <- unionList(list1, list2, list3) listAll # }
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