capwords <- function(s, strict = FALSE, sentence=T) {
cap <- function(s) paste(toupper(substring(s, 1, 1)),
{s <- substring(s, 2); if(strict) tolower(s) else s},
sep = "", collapse = " " )
if(sentence){
sapply(s, cap, USE.NAMES = !is.null(names(s)))
} else {
sapply(strsplit(s, split = " "), cap, USE.NAMES = !is.null(names(s)))
}
}
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