search for: tp26100375p26100684

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2009 Oct 28
2
How to union the elements in a list?
Suppose that I have a list of vectors. I want to compute the union of all the vectors in the list. I could use 'for' loop to do so. But I'm wondering what would be a better solution that does not need a 'for' loop. l=list(a=c(1,3,4), b=c(1,3,6), c=c(1,3,7), ....)