Nothing
uri = "http://www.treas.gov/offices/domestic-finance/debt-management/interest-rate/yield.xml"
h =
function() {
tables = list()
tb = function(node) {
# this will drop any NULL values from empty nodes.
els = unlist(xmlApply(node, xmlValue))
vals = as.numeric(els)
names(vals) = gsub("BC_", "", names(els))
tables[[length(tables) + 1]] <<- vals
NULL
}
list("G_BC_CAT" = tb, getTables = function() tables)
}
xmlTreeParse(uri, handlers = h())$getTables()
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