print.data.table gains print.keys argument, #1523 #1590
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Went with
print.keys
-- naming itkeys
orkey
seemed too misleading (though those names would be more in line withclass
orrow.names
arguments' logic).Will have to be adjusted once #1589 is handled (if more than one index, use
paste(sapply(indices(x), paste, collapse=", "), collapse=">, <")
).