Nothing
sock <- safely(socketConnection)
safe_rl <- safely(readLines)
# remove leading/trailing blanks around all strings in data.frame cols
trim_df <- function(df, stringsAsFactors=FALSE) {
data.frame(lapply(df, function (v) {
if (is.character(v)) {
trimws(v)
} else {
v
}
}), stringsAsFactors = stringsAsFactors)
}
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