Nothing
rhash <- function(n) {
paste(
sample(c(letters, LETTERS, 0:9), n, replace = TRUE),
collapse = ""
)
}
# rhash(10)
timeStamp <- function(){
timeStamp <- as.character(Sys.time())
timeStamp <- chartr("-", "_", timeStamp)
timeStamp <- chartr(" ", "_", timeStamp)
timeStamp <- chartr(":", "_", timeStamp)
timeStamp <- paste0(timeStamp, "_", rhash(10))
timeStamp
}
is.wholenumber <- function(x, tol = .Machine$double.eps^0.5) abs(x - round(x)) < tol
file.path2 <- function(...){
dots <- list(...)
if(.Platform$OS.type == "unix"){
sep <- "/"
} else {
sep <- "\\"
}
paste0(dots, collapse = sep)
}
is.formula <- function(x) inherits(x, "formula")
is_mac <- function() grepl("darwin", R.version$platform)
is_win <- function() .Platform$OS.type == "windows"
is_linux <- function() (.Platform$OS.type == "unix") && (is_mac() == FALSE)
is_unix <- function() .Platform$OS.type == "unix"
is_solaris <- function() grepl("solaris", R.version$os)
capitalize <- function(s){
if(length(s) > 1) return(vapply(s, capitalize, character(1)))
str_c(toupper(str_sub(s, 1, 1)), str_sub(s, 2))
}
`%notin%` <- function(elem, set){
if(length(elem) > 1) return(vapply(elem, `%notin%`, logical(1), set = set))
!(elem %in% set)
}
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