Nothing
make.consecutive.int <- function(y) {
intialwarn = getOption("warn")
options(warn = -1)
if(is.null(y)) {return(NULL)}
if(!is.vector(y)){
y = as.vector(as.character(y))
}
out <- as.integer(as.factor(as.character(y)))-1
options(warn = intialwarn)
return(out)
}
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