Check if an object is of class 'qe.data'
is.qe.data.RdThis function checks if an object is of class 'qe.data'.
Examples
library(data.table)
dt <- data.table(ID = 1:5)
class(dt) <- c("qe.data", class(dt))
is.qe.data(dt) # Should return TRUE
#> [1] TRUE