range1 <- IRanges(start=c(1,2,3), end=c(5,2,8))
range2 <- IRanges(start=c(15,45,20,1), end=c(15,100,80,5))
named <- IRangesList(one = range1, two = range2)
length(named) # 2
names(named) # "one" and "two"
named[[1]] # range1
unnamed <- IRangesList(range1, range2)
names(unnamed) # NULL
x <- IRangesList(start=list(c(1,2,3), c(15,45,20,1)),
end=list(c(5,2,8), c(15,100,80,5)))
as.list(x)
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