Return the number of rows present in x.
h2o.nrow(x)nrow for the base R implementation.
if (FALSE) { # \dontrun{
library(h2o)
h2o.init()
f <- "https://s3.amazonaws.com/h2o-public-test-data/smalldata/junit/cars_20mpg.csv"
cars <- h2o.importFile(f)
h2o.nrow(cars)
} # }